In article , Tasslehoff
writes
OK thanx for the idea. Any idea what contains PO4 ?

Fleet enema from your pharmacy(drugstore).

!!!!!!!!!

Well cut off both my legs and call me shorty !! Who would have thought
of putting an enema in your fish tank ? Hope it doesn't make the fish,
well, you know what blush

1-2 drops/day for your size tank I think. Best to get a phosphate
test kit as well just in case.

Thanx for the tip

--
Alan Silver
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