Mike,

I had a bad experience with the little fishes.

Seems I used them for about a month and started seeing a white waxy something floating in the skimmers. Took it to the pool builder and was told it was white mold and I would have to acid clean everything (they would only charge about $800 ).

Being a skeptic, I took a sample to an analytical laboratory and had them do a qualitative analysis on the substance. $80 later I got the results ---- PARAFFIN The same substance in the little fishes (in an alcohol solution).

Obviously the little fishes went out of the pool --- NEVER TO RETURN