S
StoneyBud
Guest
The size of the lava rock is very important in regard to how the roots establish themselves. 1/2" to 3/4" is the perfect size. If you get some 3/4" screen (Holes are 3/4" across), and shake your lava rock through it, then you can bust up the larger pieces to get it all down to the best size.
Then just put the smaller pieces on a 1/2" screen and do it again. What falls through is too small and could harm your pump.
Then just put the smaller pieces on a 1/2" screen and do it again. What falls through is too small and could harm your pump.