03-08-2006, 07:56 PM
Join Date: Nov 2005
Location: Ankara, Turkey
I have kept potted and unpotted plants in the tank for a month and I came up with little differences in their growth rate although there was enough nutrients in the water column. Another thing is that the roots developing in the pot penetrate into the wool so that it becomes very difficult to remove it by not harming the fresh roots.
I reused the rock wool that I removed, with no problem but it shouldn't be squeezed too much. The roots needs a space to exchange chemicals and too much squeezed wool may not permit this exchange.