Quote Originally Posted by Zandor
You can get some garden netting and place it on top of the grow rocks and don't fill the water level that high. Lower you overfill drain a bit and you will not have the problem.
I've thought about lowering it but I'm wooried about the water level not rising enough to saturate the whole root mass ....is it essential to soak the whole root ball? For instance NFT systems don't soak all of the roots?