co2 - 30 vs 40ppm
If fish are doing fine at 40ppm co2, is it a perfectly acceptable alternative to going back to keeping it at 30ppm?
Main reason I ask is because with my Spray-bar being positioned where it is, as the water level even lowers 1/2" I start noticing a decrease in co2 levels. The lowest it gets is 1" decrease in water level prior to doing my weekly water change. co2 generally goes from 30 to low 20's, so a 7-8ppm drop. If I get my co2 up to 40ppm, it doesnt drop below 30ppm.
I could obviously refill 1/2 through the week, or even lower the spray-bar, but... besides those options, is the 40ppm ok, or will I have algae or other problems from it.
450g Planted Discus Tank - Work in Process!