well, i just ordered some of this, and plan on totally restarting my tank, - draining it, cleaning everything and letting it sit out for a couple days with no water - that should get rid of any traces of ich right? or can it live even without water for a certain amount of time? Also--- when i get the biospira, since you are supposed to do a full stocking - on a 20 gal - my mom wants some tetras, guppies, an algea eater of some type maybe some danios... excluding the algae eater fish, and going on the general guideline of 1" a gal would say a couple male guppies, a few female and then 10 or so tetras w/ the algae eater be overstocking? i realize that chineese algae eaters can get rather large... Thanks