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You need to have a co2 reactor to have 000% dissapation Want to win a FREE new co2 system or a lighting system check out our forum for our newest contest coming up http://www.fish-forums.com Http://www.aquatic-store.com On Fri, 27 Jun 2003 10:38:52 +1000, "floguru" wrote: Forgive me for being controversial but I have drawn the following conclusions on CO2 injection. CO2 injection I can only summise has one achievement, to increase the acidity of an aquarium and thankfully not as effectively as it could. CO2 and H2O form H2CO3 (carbonic acid), the same as in rainfall which naturally is pH 4.5 - 5.5. If I use an air pump and the % make up of atmospheric air is .036% CO2, a 100 litre per hour air pump (very small) is going to deliver .036 of a litre of CO2 into my tank every hour its working. That equates to 1 litre a day or 100000 milligrams of CO2 a day. Now aquatic plants only need about 30 milligrams of CO2 per litre of water so I have delivered 33 times more CO2 (based on a 100 litre tank) than they need. Now here's the kicker. Most of the bubbles go straight to the surface and take the CO2 with them (air pump or CO2 injection) but at the surface create agitation which is very effective in capturing and dissolving air into the water. Without being able to scientifically quantify I would suggest surface agitation in an aquarium is probably responsible for 50-75% of the dissolved gases in an aquarium (in oceans and lakes its near 100%). Although the size of the bubbles will affect the air to water exchange (based on the surface area size a lot of smaller bubbles will release a lot more gas than fewer large ones). So a biowheel is doing much more than CO2 injection ever could. If you want to hypersaturate your aquarium with CO2 a readily available solution would be to pour in a bottle of soda water which is just water hypersaturated with CO2 gas. The only thing is that pH would be extremely low (never measured it but probably less than 4). I haven't done the experiments (but I might) having an interest in creating huge ocean algal blooms in the ocean to suck up some of the excess CO2 we have injected into our environment. I would be interested in wheither anyone has actually measured an increase in dissolved CO2 before and after injection and the corresponding effect on pH. Dean |
#17
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However, to achieve "000% dissapation" most any reactor will do. grin
-- Bob Alston bobalston9 AT aol DOT com "Fish-Forums.com" wrote in message ... You need to have a co2 reactor to have 000% dissapation Want to win a FREE new co2 system or a lighting system check out our forum for our newest contest coming up http://www.fish-forums.com Http://www.aquatic-store.com On Fri, 27 Jun 2003 10:38:52 +1000, "floguru" wrote: Forgive me for being controversial but I have drawn the following conclusions on CO2 injection. CO2 injection I can only summise has one achievement, to increase the acidity of an aquarium and thankfully not as effectively as it could. CO2 and H2O form H2CO3 (carbonic acid), the same as in rainfall which naturally is pH 4.5 - 5.5. If I use an air pump and the % make up of atmospheric air is .036% CO2, a 100 litre per hour air pump (very small) is going to deliver .036 of a litre of CO2 into my tank every hour its working. That equates to 1 litre a day or 100000 milligrams of CO2 a day. Now aquatic plants only need about 30 milligrams of CO2 per litre of water so I have delivered 33 times more CO2 (based on a 100 litre tank) than they need. Now here's the kicker. Most of the bubbles go straight to the surface and take the CO2 with them (air pump or CO2 injection) but at the surface create agitation which is very effective in capturing and dissolving air into the water. Without being able to scientifically quantify I would suggest surface agitation in an aquarium is probably responsible for 50-75% of the dissolved gases in an aquarium (in oceans and lakes its near 100%). Although the size of the bubbles will affect the air to water exchange (based on the surface area size a lot of smaller bubbles will release a lot more gas than fewer large ones). So a biowheel is doing much more than CO2 injection ever could. If you want to hypersaturate your aquarium with CO2 a readily available solution would be to pour in a bottle of soda water which is just water hypersaturated with CO2 gas. The only thing is that pH would be extremely low (never measured it but probably less than 4). I haven't done the experiments (but I might) having an interest in creating huge ocean algal blooms in the ocean to suck up some of the excess CO2 we have injected into our environment. I would be interested in wheither anyone has actually measured an increase in dissolved CO2 before and after injection and the corresponding effect on pH. Dean --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.773 / Virus Database: 520 - Release Date: 10/5/2004 |
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