JP2012005393A - Ballast for water tank - Google Patents

Ballast for water tank Download PDF

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JP2012005393A
JP2012005393A JP2010142848A JP2010142848A JP2012005393A JP 2012005393 A JP2012005393 A JP 2012005393A JP 2010142848 A JP2010142848 A JP 2010142848A JP 2010142848 A JP2010142848 A JP 2010142848A JP 2012005393 A JP2012005393 A JP 2012005393A
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aquarium
black
sand
magnesium
water
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Takashi Miyamoto
隆 宮本
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IT CONCEPT CO Ltd
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IT CONCEPT CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide ballast for a water tank which can purify water over a longer period of time than before, stabilize a water hardness, and greatly reduce the burden of rearing an aquatic organism.SOLUTION: The ballast for the water tank is obtained by mixing grainy and spherical magnesium, black sand, colored gravel, silica sand, and charcoal (black).

Description

本発明は、水生生物特に魚類や水草類を飼育する水槽の底等に敷いて使用する水槽用敷石に関する発明である。   The present invention relates to an aquarium paving stone that is used by being laid on the bottom of an aquarium for aquatic organisms, particularly fish and aquatic plants.

図6に示すように、従来、水槽8内に水生生物、例えば、魚類11や水草11aを飼育する際には、水槽8の底に砂、砂利又は小石10を敷き詰めていた。水槽8中の水8aの汚れを浄化するためにバクテリアを繁殖させたり浄化剤を使用していた。   As shown in FIG. 6, conventionally, when aquatic organisms such as fish 11 and aquatic plants 11 a are bred in the aquarium 8, sand, gravel, or pebbles 10 are spread on the bottom of the aquarium 8. In order to purify the dirt of the water 8a in the aquarium 8, bacteria were propagated and a purifying agent was used.

しかしながら、従来のような水槽8内で魚類11や水草11aを飼育する方法では、長期的に水8aを綺麗に保つことはできず、月に1度、また、飼育魚類11の数や水草11aの量によっては、週に1度の間隔で水槽の清掃をしなければ苔や藻9〜9cが水槽8内の水8aや水槽8の水槽壁面内8bに発生してしまい極めて手間のかかるものであった。   However, in the conventional method of rearing the fish 11 and the aquatic plants 11a in the aquarium 8, the water 8a cannot be kept clean for a long time, and once a month, the number of the reared fishes 11 or the aquatic plants 11a Depending on the amount of water, if the aquarium is not cleaned once a week, moss and algae 9-9c are generated in the water 8a in the aquarium 8 or in the aquarium wall 8b of the aquarium 8, which is extremely time-consuming. Met.

また、水槽8内の魚類11にとっては、水の浄化とともに水の硬度(GH値)を安定させることが大切であるため、苔や藻9、9aの発生を抑制することに重点を置いてしまうと、魚類11に適したGH値を維持することが難しくなり、これを解消するために別途GH値を整える調整剤を使用しなければならず、やはり手間のかかるものであった。   Moreover, since it is important for the fish 11 in the aquarium 8 to stabilize water hardness (GH value) while purifying water, emphasis is placed on suppressing the generation of moss and algae 9, 9a. However, it becomes difficult to maintain a GH value suitable for the fish 11, and in order to solve this, a regulator for adjusting the GH value must be used separately, which is also troublesome.

特開平10−98979号公報Japanese Patent Application Laid-Open No. 10-98799

そこで、本発明である水槽用敷石5は、従来よりも長期に渡って水を浄化するとともに水の硬度(GH値)を安定させることができ、水生生物の飼育における負担を大幅に軽減することができる水槽用敷石を提供する。   Thus, the aquarium paving stone 5 according to the present invention can purify water for a longer period of time and stabilize the hardness (GH value) of water, and can greatly reduce the burden of breeding aquatic organisms. A sett for aquarium that can be used.

本発明は、上記の課題を解決するために、マグネシウムと黒砂と五色石と珪砂と炭(黒色)とを混合したことを特徴とする水槽用敷石、マグネシウムを粒状又は球状に形成した水槽用敷石、前記マグネシウムを一昼夜水に浸漬したことを特徴とする水槽用敷石、前記粒状マグネシウム5dを0.015Kg〜0.02Kg(0.59%〜0.79%)としたことを特徴とする水槽用敷石及び前記マグネシウムの大きさを直径1cmから1.5cmとしたことを特徴とする水槽用敷石とした。   In order to solve the above-mentioned problems, the present invention provides a waterbath paving stone characterized by mixing magnesium, black sand, pentachromic stone, silica sand and charcoal (black), and a waterbath paving stone formed of magnesium in a granular or spherical shape. The tank paving stone characterized in that the magnesium is immersed in water all day and night, and the granular magnesium 5d is 0.015 kg to 0.02 kg (0.59% to 0.79%). The size of the paving stone and the magnesium was 1 cm to 1.5 cm in diameter.

本発明は、上記のような構成であるため、長期間に渡ってマグネシウムから水素が発生して水を浄化するため苔や藻の発生を抑制することができ、水の取り替え等の水槽内の頻繁な清掃の負担を軽減することができる。   Since the present invention is configured as described above, hydrogen is generated from magnesium over a long period of time to purify the water, so that generation of moss and algae can be suppressed. The burden of frequent cleaning can be reduced.

また、図5に示すように、本願発明である水槽用敷石5は、同時に水の硬度(GH値)を安定させるため、水槽6内で飼育されている魚類11や水草11aが活き活きとしている。そして、水槽6内に飼育されている魚類11をも長生きさせることができる。   Further, as shown in FIG. 5, the aquarium paving stone 5 according to the present invention is activated by fishes 11 and aquatic plants 11 a alive in the aquarium 6 in order to simultaneously stabilize the hardness (GH value) of water. And the fish 11 bred in the aquarium 6 can also live long.

更に、本発明である水槽用敷石5を水槽6の底7に敷き詰めることにより水槽内壁面6aに苔や藻9、9aが発生して付着しないために、水槽内壁面6aが常時透き通っているので水槽内の魚類を何時も外側から良く見えて観賞するには最も良い状態を保持させることができる。   Furthermore, since the moss and algae 9 and 9a are not generated and adhered to the inner wall surface 6a of the aquarium 6 by spreading the aquarium paving stone 5 according to the present invention on the bottom 7 of the aquarium 6, the aquarium inner wall surface 6a is always transparent. It is possible to maintain the best condition for watching the fish in the aquarium from the outside.

本発明である水槽用敷石の製造及びその使用効果を示したフローチャートである。It is the flowchart which showed manufacture of the paving stone for water tanks which is this invention, and its use effect. 本願発明である水槽用敷石を製造するための原材料を示した図である。It is the figure which showed the raw material for manufacturing the paving stone for water tanks which is this invention. 本願発明の水槽用敷石の原材料である粒状及び球体状マグネシウムを一昼夜浸漬している状態を示した図である。It is the figure which showed the state which has immersed the granular and spherical magnesium which are the raw materials of the paving stone for water tanks of this invention all day and night. 本発明である水槽用敷石を原材料を混合した状態を示した図である。It is the figure which showed the state which mixed the raw material for the paving stone for water tanks which is this invention. 本発明である水槽用敷石を使用した水槽を示す図である。It is a figure which shows the water tank using the paving stone for water tanks which is this invention. 従来の水槽の様子を示す図である。It is a figure which shows the mode of the conventional water tank.

以下、添付の図面を参照し、本発明の実施の形態について詳細に説明する。
図1は本発明である水槽用敷石の製造及びその使用効果等を示したフローチャート、図2は本願発明である水槽用敷石を製造するための原材料を示した図、図3は本願発明の水槽用敷石の原材料である粒状及び球体状マグネシウムを一昼夜浸漬している状態を示した図、図4は本発明である水槽用敷石を原材料を混合した状態を示した図、図5は本発明である水槽用敷石を使用した水槽を示す図である。
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a flowchart showing the production of the aquarium paving stone according to the present invention and the effect of using the same, FIG. 2 is a diagram showing raw materials for producing the aquarium paving stone according to the present invention, and FIG. 3 is the aquarium according to the present invention. FIG. 4 shows a state in which granular and spherical magnesium, which is a raw material of a paving stone, are immersed all day and night, FIG. 4 shows a state in which the raw material is mixed with the paving stone for an aquarium of the present invention, and FIG. It is a figure which shows the water tank which uses a certain paving stone for water tanks.

図1は、本発明である水槽用敷石の製造及びその使用効果をフローチャートである。図に示すように、本願発明である水槽用敷石5は、黒砂5a、五色石5b、
珪砂5c、粒状及び又は球体状に形成したのマグネシウム5dと炭(黒色)5eを混合したものであり、図1に示す工程で製造される。即ち、準備工程1a、加工工程1b、浸漬工程1c及び混合工程1dの各工程を経て製造する。
FIG. 1 is a flowchart showing the production of the aquarium paving stone according to the present invention and the effects of its use. As shown in the figure, the aquarium paving stone 5 according to the present invention comprises black sand 5a, five-color stone 5b,
Silica sand 5c, granular and / or spherically formed magnesium 5d and charcoal (black) 5e are mixed and manufactured in the process shown in FIG. That is, it manufactures through each process of the preparation process 1a, the process 1b, the immersion process 1c, and the mixing process 1d.

準備工程1aとは、本願発明である水槽用敷石5に用いられる材料を用意する工程である。即ち、本願発明である水槽用敷石5の材料として使用するために準備するのは、黒砂5a、五色石5b、珪砂5c、炭(黒色)5e及びマグネシウム5d等である。   The preparation step 1a is a step of preparing a material used for the water tank paving stone 5 according to the present invention. That is, the black sand 5a, the five-colored stone 5b, the quartz sand 5c, the charcoal (black) 5e, the magnesium 5d, and the like are prepared for use as the material for the aquarium paving stone 5 according to the present invention.

黒砂5a、五色石5b及び珪砂5cは、日本玉石株式会社(東京都板橋区高島平7−13−8)製造販売している砂及び石を使用する。そして、炭(黒色)5eは、関東燃料組合(群馬県前橋市二之宮)が製造販売している炭(黒色)を使用する。   As the black sand 5a, the five-colored stone 5b, and the quartz sand 5c, the sand and stone manufactured and sold by Nippon Jade Stone Co., Ltd. (7-13-8 Takashimadaira, Itabashi-ku, Tokyo) are used. The charcoal (black) 5e uses charcoal (black) manufactured and sold by the Kanto Fuel Association (Ninomiya, Maebashi, Gunma Prefecture).

上記、黒砂5a、五色石5b、珪砂5cは、磁気を帯びていない石又は砂であることが必要である。即ち、準備した黒砂5a、五色石5b、珪砂5cをそのまま使用することは出来ない。   The black sand 5a, the five-colored stone 5b, and the quartz sand 5c are required to be stones or sand that are not magnetized. That is, the prepared black sand 5a, five-colored stone 5b, and quartz sand 5c cannot be used as they are.

本願発明である水槽用敷石5として使用するためには、準備した所定量の黒砂5a、五色石5b、珪砂5cの各々に磁石を入れて入れた磁石に磁着を帯びている黒砂5a、五色石5b、珪砂5cから磁石に磁着する砂及び石は取り除き、磁石に磁着しない黒砂5a、五色石5b、珪砂5cのみを本願発明である水槽用敷石5の原材料に使用する。   In order to be used as the paving stone 5 for the aquarium according to the present invention, the black sand 5a, five colors which are magnetically attached to the magnets put in each of the prepared predetermined amount of black sand 5a, five-colored stone 5b, quartz sand 5c. The sand and stones magnetically attached to the magnets are removed from the stones 5b and the silica sand 5c, and only the black sand 5a, the five-colored stones 5b and the silica sand 5c which are not magnetically attached to the magnets are used as raw materials for the aquarium paving stone 5 according to the present invention.

また、準備する粒状及び球体状マグネシウム5dは、マグネシウム自体の純度が95%から99.95%であることが必要である。最も好ましい純度は、99.95%以上であることが良い。これは、純度が高いほど水を浄化する働きが強くしかも浄化作用も長いからである。   Further, the granular and spherical magnesium 5d to be prepared needs to have a purity of 95% to 99.95%. The most preferred purity is preferably 99.95% or more. This is because the higher the purity, the stronger the action of purifying water and the longer the purification action.

加工工程1bとは、前記準備工程1aで準備したマグネシウム5dを一定の大きさの粒状及び球体状のマグネシウムに加工処理する工程である。   The processing step 1b is a step of processing the magnesium 5d prepared in the preparation step 1a into granular and spherical magnesium having a certain size.

粒状とは、直方体形状、楕円形状、立方体状等の粒に成形されたマグネシウムの粒であり、大きさは長さ又は径等が約4mm乃至10mmのに成形した粒状マグネシウムである。球体状とは、球体状に成形されたマグネシウムの粒である。球体状の粒の大きさは、径が約4mmから10mmの大きさに成形された球体状マグネシウムの粒である。   The granular form is a magnesium grain formed into a rectangular shape, an elliptical shape, a cubic shape, or the like, and the size is a granular magnesium having a length or a diameter of about 4 mm to 10 mm. The spherical shape is a magnesium particle formed into a spherical shape. The size of the spherical particles is a spherical magnesium particle having a diameter of about 4 mm to 10 mm.

浸漬工程1cとは、マグネシウムが加工処理されて粒状及び球体状マグネシウム5dを、図3に示すように容器2に入れた後に粒状及び球体状マグネシウム5dの全てが水面下3になるまで水道水4を容器2内に入れる。   The dipping process 1c is a process in which magnesium is processed and granulated and spherical magnesium 5d is placed in a container 2 as shown in FIG. 3, and then all of the granular and spherical magnesium 5d is 3 below the surface of the water. Is placed in the container 2.

そして、浸漬させた状態で一昼夜即ち24時間浸漬させて置く。水道水4は常温で良い。勿論、水は、水道水以外の純水に浸漬させてもよいし、また純水ではなく井戸水に粒状粒状及び球体状マグネシウムを浸漬させても良い。   Then, it is immersed for 24 hours in the whole day and night. The tap water 4 may be normal temperature. Of course, the water may be immersed in pure water other than tap water, or granular granular and spherical magnesium may be immersed in well water instead of pure water.

混合工程1dとは、本願発明である水槽用敷石の材料として準備した黒砂5a、五色石5b、珪砂5c、炭(黒色)5e及び加工処理した粒状及び球状マグネシウム5dとを一定割合で混合する工程である。   The mixing step 1d is a step of mixing the black sand 5a, the five-colored stone 5b, the quartz sand 5c, the charcoal (black) 5e, and the processed granular and spherical magnesium 5d, which are prepared as materials for the aquarium stone according to the present invention, at a constant ratio. It is.

磁気を帯びていない黒砂5a、五色石5b、珪砂5c、炭(黒色)5e及び粒状及び球体状マグネシウム5aの混合比率は下記の通りである。即ち、本願発明である水槽用敷石5を1袋1.62Kg入り〜3.65Kg入りの水槽用敷石5を製造する場合の混合比率を示したものである。   The mixing ratios of black sand 5a, pentachromic stone 5b, silica sand 5c, charcoal (black) 5e, and granular and spherical magnesium 5a that are not magnetic are as follows. That is, the mixing ratio in the case of manufacturing the aquarium paving stone 5 containing 1.62 kg to 3.65 kg per bag of the aquarium paving stone 5 according to the present invention is shown.

本願発明である水槽用敷石5を製造するには、
(1)黒砂5aを0.3Kg〜0.8Kgと
(2)五色石5bを0.3Kg〜0.8Kgと
(3)珪砂5cを1.0Kg〜2Kgと
(4)粒状及び球体状マグネシウム5dを0.015Kg〜0.02Kgと
(5)炭(黒)5eを0.01Kg〜0.03Kgとを混合する。
To produce the aquarium paving stone 5 according to the present invention,
(1) 0.3 Kg to 0.8 Kg of black sand 5a (2) 0.3 Kg to 0.8 Kg of pentachromite 5b (3) 1.0 Kg to 2 Kg of silica sand 5c (4) Granular and spherical magnesium 5d 0.015 Kg to 0.02 Kg and (5) Charcoal (black) 5e is mixed with 0.01 Kg to 0.03 Kg.

しかしながら、本願発明である水槽用敷石5を製造する場合に、黒砂5a、五色石5b、珪砂5c、粒状及び球体状マグネシウム5d及び炭(黒色)5e等の混合比率が最も好ましい水槽用敷石5は下記の水槽用敷石である。 However, when the aquarium paving stone 5 according to the present invention is manufactured, the aquarium paving stone 5 with the most preferable mixing ratio of black sand 5a, pentachromic stone 5b, silica sand 5c, granular and spherical magnesium 5d, charcoal (black) 5e, etc. The following paving stone for aquarium.

(1)黒砂5a 0.5 Kg( 500g)(19.80%)
(2)五色石5b 0.5 Kg( 500g)(19.80%)
(3)珪砂5c 1.5 Kg(1500g)(59.40%)
(4)粒状及び球体状マク゛ネシュウム5d
0.015Kg( 15g)( 0.59%)
(5)炭(黒) 0.010Kg( 10g)( 0.39%)
(1) Black sand 5a 0.5 Kg (500 g) (19.80%)
(2) Five-color stone 5b 0.5 Kg (500 g) (19.80%)
(3) Silica sand 5c 1.5 Kg (1500 g) (59.40%)
(4) Granular and spherical magnesium 5d
0.015Kg (15g) (0.59%)
(5) Charcoal (black) 0.010Kg (10g) (0.39%)

粒状及び球体状マグネシウム5dと黒砂5a、五色石5b、珪砂5c、炭(黒色)5eを混合し、その総重量5.252Kgに対して粒状及び球体状マグネシウム5dは15g〜20gを混合させることが良い。また、粒状及び球体状マグネシウム5dの大きさを直径0.4mm〜15mmの大きさの粒状及び球体状マグネシウムとするとより良いが、最適な大きさは、4mm〜10mmの大きさが最も良い効果が得られる。   Granular and spherical magnesium 5d is mixed with black sand 5a, pentachromite 5b, silica sand 5c, and charcoal (black) 5e, and 15g to 20g of granular and spherical magnesium 5d may be mixed with respect to the total weight of 5.252Kg. good. The granular and spherical magnesium 5d is preferably a granular and spherical magnesium having a diameter of 0.4 mm to 15 mm, but the optimum size is 4 mm to 10 mm. can get.

敷詰工程1eとは、粒状及び球体状のマグネシウム5dと黒砂5a、五色石5b、珪砂5c、炭(黒色)5eが混合して製造された水槽用敷石5を水槽6の底7に敷き詰める工程である。このように、水槽6の底7に敷き詰めて使用する。敷き詰めした混合水槽用敷石5の間隙の上に水草11a等を植え付けることもできる。   The laying step 1e is a step of laying the bottom 7 of the aquarium 6 with the paving stone 5 for aquarium, which is produced by mixing granular and spherical magnesium 5d with black sand 5a, five-colored stone 5b, quartz sand 5c, and charcoal (black) 5e. It is. In this way, the water tank 6 is laid on the bottom 7 for use. It is also possible to plant aquatic plants 11a and the like on the gaps between the mixed water tank paving stones 5 spread.

ここで、重要なことは、粒状及び球体状のマグネシウム5dと炭(黒色)5e以外の
黒砂5a、五色石5b及び珪砂5cは、磁石は、磁石を近づけても磁石に磁着することがない砂、石である。即ち、磁石に磁着しない黒砂5a、五色石5b及び珪砂5cのみを用いることが大切である。
Here, it is important that the black sand 5a, the pentachromite 5b, and the silica sand 5c other than the granular and spherical magnesium 5d and the charcoal (black) 5e are not magnetically attached to the magnet even when the magnet is brought close to the magnet. Sand and stone. That is, it is important to use only the black sand 5a, the five-colored stone 5b, and the silica sand 5c that are not magnetically attached to the magnet.

水素発生工程1fとは、水槽6の底7に敷き詰められた水槽用敷石5から水素が発生する工程である。敷き詰められて水槽用敷石5の粒状及び球体状マグネシウム5dからは自然に水素が発生し、発生した水素により水槽6内の水が浄化される。   The hydrogen generation step 1 f is a step in which hydrogen is generated from the water tank paving stones 5 spread on the bottom 7 of the water tank 6. The hydrogen is naturally generated from the granular and spherical magnesium 5d of the aquarium paving stone 5 and the water in the aquarium 6 is purified by the generated hydrogen.

本発明である水槽用敷石5は、長期間に渡って水を浄化し続け、硬度(GH値)を安定させるため水槽内を清掃する手間を省くことができ、水生生物を扱うペット業界及び水生生物愛好者にに多大な貢献をもたらす。   The aquarium paving stone 5 according to the present invention can purify water over a long period of time and can save the trouble of cleaning the aquarium in order to stabilize the hardness (GH value). It makes a great contribution to biological enthusiasts.

1〜1d 水槽用敷石製造及び使用効果を示したフローチャート
1a 準備工程
1b 加工工程
1c 浸漬工程
1d 混合工程
1e 敷詰工程
1f 水素発生工程
2 容器
3 水面下
4 水道水
5 水槽用敷石
5a 黒砂
5b 五色石
5c 珪砂
5d 粒状及び球体状マグネシウム
5e 炭(黒)
6 水槽
6a 水槽内壁面
7 底
8 水槽
8a 水
8b 水槽内壁面
9〜9c 苔や藻
10 砂利や小石
11 魚類
11a 水草
1-1d Flow chart showing production and use effect of aquarium 1a Preparatory process 1b Processing process 1c Immersion process 1d Mixing process 1e Padding process 1f Hydrogen generation process 2 Container 3 Underwater surface 4 Tap water 5 Aqueduct 5b Black sand 5b Five colors Stone 5c Silica sand 5d Granular and spherical magnesium 5e Charcoal (black)
6 Water tank 6a Water tank inner wall surface 7 Bottom 8 Water tank 8a Water 8b Water tank inner wall surface 9-9c Moss and algae 10 Gravel and pebbles 11 Fish 11a Aquatic plants

Claims (5)

マグネシウムと黒砂と五色石と珪砂と炭(黒色)とを混合したことを特徴とする水槽用 敷石。   A paving stone for an aquarium characterized by mixing magnesium, black sand, pentachrome, quartz sand, and charcoal (black). マグネシウムを粒状及び球体状に形成したことを特徴とする請求項1に記載の水槽用敷石。   The aquarium paving stone according to claim 1, wherein magnesium is formed into a granular shape and a spherical shape. 前記粒状及び球体状マグネシウムを一昼夜水に浸漬したことを特徴とする請求項1又は2に記載の水槽用敷石。   The aquarium paving stone according to claim 1 or 2, wherein the granular and spherical magnesium is immersed in water all day and night. 混合した前記粒状及び球体状マグネシウムの重量を総重量の15gから20gとしたことを特徴とする請求項1、請求項2又は請求項3としたことを特徴とする水槽用敷石。   The aquarium paving stone according to claim 1, 2 or 3, wherein the weight of the mixed granular and spherical magnesium is 15g to 20g of the total weight. 前記マグネシウムの大きさを直径1cmから1.5cmとしたことを特徴とする請求項1、請求項2、請求項3又は請求項4に記載の水槽用敷石。   The aquarium paving stone according to claim 1, 2, 3, or 4, wherein the magnesium has a diameter of 1 cm to 1.5 cm.
JP2010142848A 2010-06-23 2010-06-23 Ballast for water tank Pending JP2012005393A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532297A (en) * 1976-06-22 1978-01-11 Motosaku Hirasawa Method of purifying water tanks for fancy fish and water tanks therefor
JPH0739272A (en) * 1993-08-04 1995-02-10 Matsuhisa Morishima Decorative unit for water tank for rearing fish
JP2001121179A (en) * 1999-10-21 2001-05-08 Clion Co Ltd Porous cleaning material and method for manufacturing the same
JP2002209470A (en) * 2001-01-17 2002-07-30 Suiken:Kk Base filtration equipment
JP2005013925A (en) * 2003-06-27 2005-01-20 Ikuko Uragami Reduced water generation member
JP2005144420A (en) * 2003-11-13 2005-06-09 Unylec:Kk Water cleaning agent
JP2007326769A (en) * 2006-05-08 2007-12-20 Setsuo Kobayashi Magnesium-based slow-dissolving agent and its production method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532297A (en) * 1976-06-22 1978-01-11 Motosaku Hirasawa Method of purifying water tanks for fancy fish and water tanks therefor
JPH0739272A (en) * 1993-08-04 1995-02-10 Matsuhisa Morishima Decorative unit for water tank for rearing fish
JP2001121179A (en) * 1999-10-21 2001-05-08 Clion Co Ltd Porous cleaning material and method for manufacturing the same
JP2002209470A (en) * 2001-01-17 2002-07-30 Suiken:Kk Base filtration equipment
JP2005013925A (en) * 2003-06-27 2005-01-20 Ikuko Uragami Reduced water generation member
JP2005144420A (en) * 2003-11-13 2005-06-09 Unylec:Kk Water cleaning agent
JP2007326769A (en) * 2006-05-08 2007-12-20 Setsuo Kobayashi Magnesium-based slow-dissolving agent and its production method

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