Thanks once again - ahh that answers the gravity question! It's a great system you have there. I was thinking a simple one way flow (swing check valve) http://imagehost.vendio.com/bin/imag...ve_1_union.jpg value might have done it with out the 2nd pump - or if the reservoir was below the buckets then by natural gravity.

What have you found with your experiment so far as when leaving water in the buckets at different levels?

I was thinking you could almost have a aero-bubble hybrid system - perhaps that would be a waste of time though.

Also does it matter if the reservoir is covered, does light effect the nutes when light hits them in any way? I remember hearing fluorescent light for example can effect oil in a deep fryer some way.

Anyway I am coming along nicely (thanks to you) and nearly completed my own "daddy-o system" :thumbsup:

I'll keep you posted! Thanks again for all your help mate - you rock!

(and I'll probably bother you again with a silly question - as after re-reading my last question, I barely understood it myself - clear as day as you say!)

trippy321 Reviewed by trippy321 on . Daddys Garden Hydroton in 6"net pots, set in 6" netpot 5gal bucket lids with the net cut off so the 6"pots can be started in a ebb and flow tub 3-5 min on and 40-120 off, the max and min.without causing overwater wilt 18hrs floro twin 40watters for starts and early veg,then 18hrs veg under one 1000watt halide. 11.5 hrs flower under one 1000wattHPS and one 1000watthalide seeds and clones from clones from clones until bugs,then wipe clean start seeds again never have a mother. 5gal bucket grow Rating: 5