Eventually I'll move my Tetras to this tank as well, of course that will raise NO3 and PO4 production, but the problem I've been facing is my plants are draining all nitrate, and phosphate has been left in excess. During light time I've measured NO3 as 0ppm and PO4 as 1 - 1.5 ppm. The plants are not ...

I've got a 42 gallon tank, heavy planted, but I've been noticing my plants are draining nitrate as hell. To replenish Nitrogen, I was thinking about adding a solution of NaNO3 (Sodium Nitrate), but I'm worried about my five Corydora schwartzi and four Otocinclus sp.

This sodium excess can cause ...