So what better way to find out the answer to this than ask a chemist..and what better chemist to ask than a marine chemist...So I found one at my local community college. I explained what I wanted to do, he said yes it will work but the reaction would be almost immediate and not the gradual slope I was hoping for. He said with out running all the numbers for weight of CaCO3 vs the pH of the Carbonic Acid itself (soda water varies depending on manufactuor) that the reactor would increase exponentially until it reached the balance point. He said it would produce a huge amount of CO2 in little over an hour if the soda water's pH was around 6.5. CO2 released from the reaction would make the solution pH decrease increasing the reaction until it was at equilibrium. He said it would definately kill fish levels of CO2. He did say it was possible to make a generator but using different materials, he suggested limestone and lemon juice in distilled water. making sure the water was at about a 6.9 pH and buffering the crap out of the water so the pH drop would be drasticaly reduced giving a long drawn out stable CO2 release. He said its the same way an auto feeding table works not the jelley ones, but the grayish ones. Plaster of paris with flake food mixed into it, acidic tank water disolves the tablet so the fish can get at the food, the tablet itself reacts with the tank water releases small amounts of CO2. I am still going to experiment this week end with it though, but I ask a professor....Im taking an anylitical chem class thats kinda what prompted this along with I had a reef tank
29g Tetra Tank
100g Planted Angel/Clown Loach
I can't spell...Im an engineer, I do math
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