Will a high kh cause the ph to raise over time?
RO water- ph:7.2 to 7.4,gh:5,kh:7
well water-ph:7.2 to 7.6,gh:6,kh:18
I use the API master test kit so I’m not sure exactly what the ph is.
I have been using RO water with Seachem products to get the water to were I want it for my 40 gallon. I set up a 14 gallon using my well water. The water parameters were pretty much the same. The only big difference was the KH.
This was the tank before I left for travel for work for 2 weeks and came back to all the plants dead. Was pretty bummed and forgot to take a picture of the after. There was no fish in the tank. Was cycling the tank and having my girlfriend put some fish food in it every day.
water parameters before:
ph: 7.2 to 7.4
gh: 6
kh: 18
water parameters after:
ph: 8.8(so purple it was basically black)
gh: 5
kh: 16
The rock and wood have been used before in a 20 long tank that I remove them from to make more room for plants. It’s the same brand of sand and Aqua soil I have used in my other tanks and haven’t had a problem.