I have a 90 gal. planted aquarium with a pH controller and a Finnex led light. There's an overflow that goes into a wet/dry filter. CO2 goes into the (sealed) wet/dry right at the top. I've been trying to overcome an algae issue with higher CO2 and additional nutrients using a PPS pro formula. To determine the nutrient level, I've checked nitrates ONLY. Since it's been on the low side (5PPM) I boosted both components of the PPS pro system. Just today I checked phosphates, which were HORRIBLE (10 PPM). Nitrates were 10 - 20 ppm. I'm doing a large water change tommorrow and eliminating phosphate addition until things get straightened out. The fish have appeared sluggish, and now I realize its' probably very low O2 levels.
I've been adding the CO2 to the top of the wet/dry in order to use the wet/dry as a CO2 reactor. I suspect this contributed to the low O2 levels. Trying to combat the algae issue, I've been lowering the pH until I saw signs of distress in the fish. Right now pH is at 6.0, with a kH of 3-4. The tank is planted primarily with crypt's, with an amazon sword and a Madagascar lace plant.
What should my priorities be in straightening out my mess?
Thanks in advance!
Tanksalot
I've been adding the CO2 to the top of the wet/dry in order to use the wet/dry as a CO2 reactor. I suspect this contributed to the low O2 levels. Trying to combat the algae issue, I've been lowering the pH until I saw signs of distress in the fish. Right now pH is at 6.0, with a kH of 3-4. The tank is planted primarily with crypt's, with an amazon sword and a Madagascar lace plant.
What should my priorities be in straightening out my mess?
Thanks in advance!
Tanksalot