BaRanchik Posted June 3, 2021 Share Posted June 3, 2021 I just ordered a nitrogen specific fertilizer to compliment the all-in-one fert I'm using. I have duckweed (by choice) covering my whole tank, and it's sucking up WAY too much nutrients. The tank is 2 months old, under stocked 10 gal. Ammonia and nitrite are 0, and I'd love to have nitrates stable on 30ppm. I'm doing water changes every 2 weeks, and about 25%. I get very little algae so far, just a bit of diatom and green hair that my cleanup crew is taking care of for the most part. My tank is heavily planted, and everything but floaters is doing great so far. The problem starts with nitrates - my fert includes them, but I guess it's not very concentrated, and this is the only one I could find around here. Within 1 week, nitrates dropped from 30ppm to 5-10ppm or less, and old floater leaves began dying slowly (the tips begin disintegrating slowly). This has happened before and as suggested here I now dose twice a week. For a bit it seemed great but now nitrate levels are super low again! So I ordered Flourish Nitrogen, hoping it will solve the problem. I checked their website as they have a dosing calculator and it tells me I need to use 10 caps to raise it to that level?! This seems weird so I wanted to hear some more opinions here. Also, I don't want to get a whole bottle of this fert every 2 months.... I am thinking of trying a new dosing schedule: API Leaf Zone for potassium and iron twice a week, Flourish Nitrogen once a week, all-in-one fert once a week. Right now it's 2x API and 2x AIO. I'm afraid to lower the amounts, I don't want to kill my healthy plants! I'd appreciate any suggestions regarding this situation. Link to comment Share on other sites More sharing options...
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