Does peat lower KH or pH?

This is not for the plants is it? Cause this is not going to help you much at all.

no, my ph is 8.0(at the tap!) and i want tetras!(BTW i've tryed ph 7.0 and it didn't work)
 
I kept and bred tetras, Cardinals and Rummy Noses, in SB which has worst(harderwater) tap than LA(KH 9, GH 24). Tap pH doesn't mean a whole lot for a CO2 enriched tank.
If I can bred them, I think the hardness while it may improve fry yields, is not as big of a key as folks like to think.

Food, O2, good stocking level etc are the prime important factors. Total salt content is more important than pH for just about all fish. pH moves around and is influenced by many things in nature and in out tanks. If you wish to bred Apisto's, raise wild stock etc, you might want to blend with RO, at least you drink the RO, try that using peat water:-)

But the peat and softer water does not help the plants. It's only for a few fish species/breeding

Regards,
Tom Barr
 
AquariaCentral.com