http://www.aquazoo.co.uk/page.cfm/Type=FaN/ItemID=134

Apparently, SERA rarely reveals the ingredients of their stuff unless local
by-laws require it. But if you do a search on the products, a lot of people
have had great resuts with them.

"Bruce Geist" wrote in message
...
What is it? -Bruce Geist
Wynand wrote in message
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in their tanks ,with or without fish?
thx