I made a few batches of diy rock with white cement, sand and perlite. It's taking a long time to kure but that's not what my question is about.
My first batch is in two buckets and I change with tap water regularly from 3-7 times a week.
The pH has dropped on both but one has settled at 9.7 and the other 11.
Without change for maybe 2 weeks I decided to change the lower one with carbon filtered tap water. My original water has a pH of about 8.5 and after the carbon filter it's 6.3.
After the change each day it rose about 1 level until it went up to 10.5, so I was confused. I filled it with regular tap water again and again it went back to 10.5.
Of course it doesn't make any difference to my kuring process, I'll continue until I see less than 9 but what exactly is going on here??
My first batch is in two buckets and I change with tap water regularly from 3-7 times a week.
The pH has dropped on both but one has settled at 9.7 and the other 11.
Without change for maybe 2 weeks I decided to change the lower one with carbon filtered tap water. My original water has a pH of about 8.5 and after the carbon filter it's 6.3.
After the change each day it rose about 1 level until it went up to 10.5, so I was confused. I filled it with regular tap water again and again it went back to 10.5.
Of course it doesn't make any difference to my kuring process, I'll continue until I see less than 9 but what exactly is going on here??


