06-17-2012, 05:31 PM
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I've been doing 25% water changes weekly, putting in a micro-nutrient fertilizer (dennerle V30 complete, I posted the specs for this in another thread before..) and since there is no fish load I've been dosing small amounts of P and N liquid ferts becuase the Dennerle explicity says "no nitrates, no phosphates". I'm dosing the ferts every time I do a water change. The Dennerle I add as according to the instructions, and I added enough nitrate fert to get 5ppm nitrates, and enough phosphate to get .5 ppm. I did a nitrate test today and the value is between 0 and 10 ppm, looks closer to 0. This is 2-3 days since last dosing of nitrate fert. The tank has a slight bio-load due to the small colony of Malaysan livebearing snails. They seem happy to just feed off dying leaves and also the diatoms, I'm not adding any other source of food into the tank. The tank has been running over a month, and plants went in on May 24. The lighting is T8 fluorescents, 2 tubes @ 18W 6500K. The tank size is 112L or about 30 gallons. Water hardness is 15dGH, ph ~8, probably a bit under since the official numbers from the water supply folks says up to 7.9 pH.