JustCurious79
Active Member
I got some rockwool cubes I was told were ph-neutral. Just earlier today I started propagating seeds in them. It struck me I also could investigate their ph-value with the water I used to soak them in... and heck, it was way up in 8. I immediately rinced them with water ph'd to 6 (with vinegar). Later today I intend to redo the test and see if the situation improves.
Just so you know. Even though the store says rockwool is ph-neutral, it isn't always true.
Just so you know. Even though the store says rockwool is ph-neutral, it isn't always true.