I decided to go with a sand substrate for my new setup, and came across some beautiful black silica at a local rock/landscaping place. $3.60 for an 80 lb. bag! It's intended to be used with paver blocks. It's fairly grainy, so I hope it won't compact too much.
I'm gonna rinse the bejeesus out of it, but do you think it will leach anything into the water (I have heard of issues with silicates leaching into the water, but so many people recommend silica sand, I am wondering where the disparity is here).
Thanks!
-Jeff
I'm gonna rinse the bejeesus out of it, but do you think it will leach anything into the water (I have heard of issues with silicates leaching into the water, but so many people recommend silica sand, I am wondering where the disparity is here).
Thanks!
-Jeff