Heavy stained (tannins) water, please help
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I recently tried to do a Diana Walstad method tank, so far seems to be doing fine but the water is dark brown, like strong coffee, I used a cheap topsoil from Home Depot called EarthGro, I believe other people have used it (http://thegab.org/Plants/step-by-step-setting-up-a-walstad-type-natural-planted-tank.html) and capped it off with sea carib eco-complete substrate. so far ammonia 0, nitrites 0 and traces of nitrates
