Yah I may have to much light. 2x54w t5ho Hanging 9" above 75gal tank. Photoperiod is 8hrs. I change 50% of the water per week and I dose a dash of PO4 NO3 and 1/4 tsp CSM and K, once a week. I do know that the plants are not keeping up with the Nitrates from the fish load as I test for NO3, and it is always rising. At WC NO3 would be about 5ppm but by the end of the week it is at about 15ppm. I do feed about 4 times a day though. 10 rasboras, 9 rummynose, 2discus(3"), 4 corys, and 2 otos. The plants are growing though, I trim old leaves about every 2 weeks. They just dont look like they are real healthy, and because I didnt see any red on the ozelot and the thin leaves on the amazons I thought it was Iron. It is prob CO2 though, and I am in no position to put a co2 system in place( the funds are not there now). I did also use excel for about 4 weeks when I got the plants but they did not look any healthier, they just grew faster. My substrate is plain gravel with plenty of flourish root tabs, about 1.5 tabs per plant.
Is the fourish iron better than the CSM iron, or for that matter is the flourish comp better than CSM. I know it is more expensive but at the rate my plants use up the ferts a bottle would last me quite some time.
As a side note, what would be a good plant substrate to use that would not wear away the corys barbels.
Thanks again
