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helgymatt · 11-11-2008, 07:03 PM

Yes, tank is full of fish. People need to realize that just because a drop checker, this doesn't mean the CO2 is always optimum. The drop checker is just an indicator and has a lot of error. CO2 can vary greatly in different areas of the tank and the drop checker can read different in any of those places. I have two in my tank. In one area the checker is almost always yellow and the other stays green. You should use it as an indicator and then fine tune from there. I find that I can run more CO2 than what just makes my checker green. I turn up my CO2 slowly, watch the fish and plants and settle on a good rate.

11-11-2008, 07:03 PM	#4 (permalink)
helgymatt Senior Member Join Date: Sep 2007 Location: Ames, IA Posts: 831 iTrader Ratings: 33 iTrader Positive Rating: 100% Plant Points: 50000	Re: Interesting question? Yes, tank is full of fish. People need to realize that just because a drop checker, this doesn't mean the CO2 is always optimum. The drop checker is just an indicator and has a lot of error. CO2 can vary greatly in different areas of the tank and the drop checker can read different in any of those places. I have two in my tank. In one area the checker is almost always yellow and the other stays green. You should use it as an indicator and then fine tune from there. I find that I can run more CO2 than what just makes my checker green. I turn up my CO2 slowly, watch the fish and plants and settle on a good rate.