Ohad Posted February 1 Share Posted February 1 Hi there. I am new to co2; I have a 95g small kit. I got a drop checker. After researching more, I decided to leave the co2 yesterday for 8 hours on one bubble per second. After a few hours, the drop checker finally turned from blue to dark green; this morning, again, the drop checker was blue and, after a couple of hours, turned dark green. I thought I hit the sweet spot But then a package came in the mail from the aquarium co-op with the Dennerle co2 quick test. Right away, I tried it, and the result was bright yellow, like CO2 overkill I still don't have any fish in the tank. But I need a way to know CO2 levels or it goes in the garbage Thank you 1 Link to comment Share on other sites More sharing options...
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