I have no experience with Haydite.

I would ask, does Haydite allow plants to grow thru it?

If you study geology, you will find some of the most lush and fertile grounds are on land formed from recent lava flows.

In many islands, you can have palm trees that grew right up and out of lava rock or magma. Amazing how righ the stuff is.

And hold the lime for now. Keep it simple.
HARDDON Reviewed by HARDDON on . Help with Soil Medium... Please I have searched the forums and done some research. I want to start my second grow. My first grow was ok but I found my plants stayed water logged for too long. and I believe this hurt them in the end. I used Coco and Hydroton rocks and dolomite lime. I want to use somthing diffrent this time. Or well somthing that will work better than what the guy at the store told me to use. I now realize I think he was just trying to sell me shit when he told me to use the rocks for air in th soil. Rating: 5