Need help determining CO2/light level
Seeking some advice:
30 gallon long.
Pressurized CO2 feeding into a glass diffusor that is directly under my filter intake.
110 watts compact flourescent lighting (4000K), 3.6 WPG
With this setup, in order to combat algae problems I had the CO2 pumping fast.
Fish fairly inactive, occasionally make a quick grab at the surface air and go back down.
Any shrimp I keep seem to die within a couple weeks.
KH = 14, pH = 6.4... which would mean ~ 160 ppm CO2. Is that even possible?
Anyway, I recently was advised to lower my Co2 level. It was killing my filter with all that air anyway... so I was glad to. I repositioned the diffuser under the filter output and turned the bubble rate way down... maybe 2 bps. Fish seem ALOT happier now... but I'm worried algae will come back with such high light and not as much CO2... so is it advised that I also lower the light level to balance things out? I have another fixture that is a twin tube hood that holds two T12 bulbs. That would give me 2 WPG instead... and the much less efficient T12 bulbs. Should I use this light instead or stick with the high powered light? With the new CO2 setup pH is 7.1, which would indicate 33 ppm of CO2.