Sulfuric Bog Tank -- what is causing this???
I have a mystery on my hands... I have a 10 gallon guppy tank, very lightly populated (3 adults, two sub-adults and two juvies, plus brand-new fry). A mystery snail (added after said stink started). Same substrate as several of my other tanks (Turface), same ferts, same plants, everything. Except for the guppies inhabiting it. This thing STINKS. It smells highly sulfuric. Like I have a volcano in my living room. The parameters are PERFECT, there is plenty of air flow, the plants aren't rotting. The inhabitants are incredibly healthy and energetic. They popped out fry, which are equally healthy and energetic. I've tried almost everything -- nearly complete water changes, swapping out filter media for stuff from a non-odoriferous tank... you name it. I need to figure out what is going on here, because this thing is offensive. I may just move it somewhere else, since everyone and everything seems happy, but BLEH!