DIY Rock (oystercrete) curing??

[eli@fijireefrock.com]

Come to think of it, years ago i had the same problem as Wolf_bluejay.

Originally Posted by wolf_bluejay

when I did a bunch ages ago, I found that after the PH stabilized out in fresh water it would spike again in salt.
I would add some salt to the water (if you want to be cheap, just use rock salt) and watch the PH again. Mine spike up to 11 after adding in the salt, and took about 2-3 weeks to come down again.