Drop checkers can easily be set to be green at whatever co2 level you desire. Adjusting the KH of the the water inside them is how. I usually run my tanks at about 40ppm and have had healthy fish and thriving shrimp populations.Hmm.. What about the fish, though? How can you be sure those levels aren't hard on them?
Off.I run an airstone for 5 hours at night, but during the day..
Why not do both simultaneously?Would I start adding the nitrogen, etc. before upping the CO2?
Don't use the controller. Bring the pH down a bit. Either way will work.Also, I have it set-up so that the C02 turns on or off depending on the pH. The CO2 is on till it gets to a pH of 6.8, then shuts off.
So if it get's to set point, even if the level is still "green" there's no way to get more C02 pumped in..
Don't know how I could get around that..
We've only gotten a smattering of details regarding your setup. How much lighting? How long is the photoperiod? Details, details, details! The more, the better. We need the whole picture to really help you.