In reply to Anonymous.

I'm not sure if I've mentioned this before or not, but my Dad has a small dryland fish farm. He raises Tilapia in his greenhouse and basement for personal consumption, and entertainment. He had a helluva time getting the first few batches to survive long, until he got serious about water filters. He now has a reverse osmosis filter, in addition to a bunch of others, and this has made a huge difference. The fish are thriving...he had to expand his tanks, and now sells the babies as feeders to the local pet shop! So...try filtering your tap water before you fill the tank...it's good for you AND the fish.