Water condition : Is there something to improve?

[pablos]

I have quite a good tap water:

GH - 8 dH
KH - 6
pH - 7.0
Cl - 0
TDS - 70

I have (currently unused) 4 stages RO filter. Is there is a sense to use it for water change? Should I mix it 50% with tap water?

[danotaylor]

Your tap water looks great, I would not bother with the RO at all

[pablos]

It's a benefit of leaving in desert without a natural water sources. Tap water is produced from filtering sea water. I guess it's kind of commercial grade RO system.