Balancing PH & TDS
So... shrimp are happy. Crystals and Rili's.
My problem is, tap water comes out at PH of 7.4-7.6.
Im shooting for TDS 150-170.
And PH 6.6-6.8
But whenever I do water changes with RO, and try to get the right PH, my TDS drops a lot. Down to 130-150. The PH hits ideal, but then I get a little to worried about the TDS, so I then add Tap Water -TDS of 200-230. I then get the TDS at 170, but then the PH rises to 7.0-7.2.
I can either go ideal PH and add products to get the right TDS.
I can either go with ideal TDS and add products to get the right PH.
My shrimp are all happy with TDS 170 PH 7.2 GH 3-5
But I would like TDS 150-170 and PH of 6.6-6.8
And to favor the Crystals of course and keeping them "happy" and "living"
Any help? recommended products?