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Hi everyone...my very 1st post...here it goes...
On my 55gal..I have had it 12 yrs..started live plants 3 or so yrs ago..I have always had high Ph 8.2 or so and hard water.. a yr ago I bought a RO system and do evap rep. only with RO water and when I do p.w.c. I try to use half RO and half tap...