RE: Plastic toxin in tank

["Maladorno, Dionigi" <DIONIGI.MALADORNO@roche.com>]

I agree with you. I meant to suggest the use of carbon as a temporary
measure to remove the residues left in the fish tank, which apparently
were not removed even by a thourough cleaning.

I do not know if it is acceptable to continue using the plastic water
storage tank, hoping for the chemicals to eventually stop  leaching out.
I would not take a chance, but maybe others would.

I store for re-use the reject water from my RO system in a 50 gal
polyethylene tank for agricultural use, which I bought from a hardware
mail-order company (Northern Equipment).  No problems at all.
 
Concerning the plasticizers, I seem to remember there are several
reports of toxicity problems in fish. If it is all of them, or only
some, that I do not know. 

Dionigi


>----------
>Wright Huntley[SMTP:huntley@ix.netcom.com] wrote:
><<<<<
>The better solution is to avoid softer or flexible plastics wherever
>possible. "Plasticizers" are chemicals (often soluble) added to a
>polymer to make it more flexible and tougher. Hard rigid "plastic," (is
>that an oxymoron, or what?) like acrylic and polycarbonate clear sheet
>are usually pretty free of plasticizers.>>>>>>>
>