My anacharis was thriving and growing like crazy, but since I moved to my new house 2 1/2 months ago it’s been going downhill and no new growth at all. What can I do to help it? I am very low tech, haven’t done anything special but put it in the tank. Started with one piece I got from the fish store and ended up with a whole tank. I culled it fairly heavily when we first moved and buried some of the tips to get it to root in certain places and that’s it. If it matters, I know the first piece I got floated really well and now what’s in there if I pull it up it doesn’t float at all.