The higher the kh, the more co2 it takes to drop the ph. The lower the ph and kh, the less co2 you need right?
I have a drop checker but really don't pay much attention to it. I mainly test the pH and kh and compare it to the kh/pH co2 chart. During peak times, pH is around 6.8-7. 3 hours after co2 has been off pH is 7.4-7.6.
I use an eheim canister. And I have 2 circulation pumps. A koralia nano 240 and a 420. The 420 is slightly pointed towards the surface to create some surface movement. But it really doesn't break the surface. Its also on a time to come on for 30mins every other hour. I have it on a timer because I had a bad oil slick but I didn't want it running 24/7.
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