Does this sound like over watering?

[rastaman79]

What do the roots look like?
I'd say that there is a good chance you're overwatering. But I have other questions.
Couple things-
-What is the pH of the runoff?
-Are you aerating your nute solution?[attachment=o166852]

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I have not grown in RW blocks but I want to say that your water application sounds excessive. I hope someone who is a RW grower will chime in.

Thanks stinky.The brown spots seem to be subsiding,as ive put a smaller outlet pipe on the pump,but now it seems that I have a mg/cal problem due to lock out maybe because of low ph5.4/5.5(I read that both mg/cal are absorbed better at a higher ph(5.8) so im bringing it up to that.My roots look fine(white,lots of).Yes I do have airation in my res,and I add h2o2 every 3 days.Ive still got a few limp lower leaves and the deficiency,is on the upper parts of the plants,hope this helps diagnostics.whats the best way to deal with this?Sorry for the crap pictures.Thanks,RM.

rastaman79 Reviewed by rastaman79 on 11-21-2007. Does this sound like over watering? Hello all, I have two plants on a NFT table 4ftx2ft,in large rockwool cubes.The pump moves 150L/H and is on constant as this is what ive read.Is this too much? I ask because the bottom leaves have started to get brown spots,gone soft and look wilted,some of the new growth also looks twisted.The plants have been on the tray 16 days on 18/6,being fed canna vega A+B at 1100ppm adding h2o2 every 3 days at a rate of 1ml per litre.600watt hps,fans blowing through and over the tops of the plants.I Rating: 5