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Comment by Vlad Jovanovic on May 15, 2012 at 3:11pm

No, no soil. Hydroton, cocco coir, perlite, vermiculite, worm castings and a bit of zeolite, in the top half and just hydroton in the bottom half...No soil.

I did a somewhat detailed write-up on this "dual root-zone" concept here...http://aquaponicscommunity.com/group/fish-less-systems/forum/topics...

if you are bored or interested enough to read it...it was an (successful) experiment (because I am impatient by nature and AP apparently takes quite a bit of patience for certain things to be able to happen) on catering to the specific nutrient demands of certain plants without affecting the system water as a whole.

Comment by Kaspars on May 15, 2012 at 12:23pm

Do you use hydroton with some soil in pots?