Guess if they die in the substraite they just become more fert- hehe.
I know quite a few stock tanks (.5-5 acre ponds) that have freshwater clams in them. I have only seen them in tanks with silty bottoms - which makes me wonder how they would deal with my sandy substraite (but guess since there salt water cousins do just find in sand, they would probably do well also).
Been meaning to harvest some moss from one tank (possibly to do a ultra cheap biotype) perhaps I will attempt to harvest some clams as well. I think the silty bottom of the tanks probably has too much organic matter for me to really want to use it as well, but for a truely authenic biotype I might give that a short try as well (especially if I can find some out of the way garage space incase this experiment turns smelly).
So many ideas - so little space, budget, and time...
58 gallon oceanic, Kessel 360 tun sun, pressurized co2, eheim pimp #179 - 2217 and diffuser