Yes, the crypts would recover but I'm keen to try something new. Call me fickle...I mourn the loss of many crypts. They should recover, right?
I just removed my CO2 from my 36g and my 20g, but with my lighting, and considering that the CO2 injection has not been regular for some months now, I don't even think the plants will know the difference. I hadn't changed the canisters in a month. I think I had some moonshine when I finally opened the canisters.
Look forward to the redo. It'll be great.
llj
I suspect your tanks will do just fine without CO2 injection. You are the TFF Queen of Low-tech!