On your next clean cycle, do water only for a few days, no nutes - Then push your PPM up to about 800 - No need for calmag unless your seeing a calcium defenciency or your 3-4 weeks into bloom. I've never used calmag in my DWC veg (only flower), and my girls have always been lush and green. Keep a closer eye on your PH, in DWC that 5.7-6.1 range is huge, keep it at a steady number, adjust daily if you have to. My range is 5.6-5.8 for veg. (I don't let it go over 5.8, and i take it down to 5.6 just before lights out)

You've got a really deep green color, which is nice and healthy - But they do need a rinse cycle, DWC is nice because you can constantly nute and get them up quicker, and flower them quicker, but the issue we often encounter is over feeding. I don't think that is the case here, but it is important that you rinse them for a few days and start fresh. I do exclusively DWC/RDWC (DWC for new strains, RDWC for crop) - Here is what mine looks like:

Clone - 2 weeks
3 gallon container (shallow) 12 sites per unit (DWC)
Gets nothing but PH'd water and Clonex Hydro Solution
Clones are in Riotcubes
250 PPM
5.6-5.8 PH

2-4 weeks
10 gallon containers (shallow) 12 sites per unit (RDWC)
30 gallon control bucket feeding 2 units
Nutes:
Start at 300ppm and slowly increase daily to 800ppm by the end of week 4
Fox Farm Grow Big Hydro
Big Bloom started on week 3
SuperThrive
PH 5.6-5.8 (The control bucket is always 5.7, but ph varies on the cycles)
PPM 300-800 Depending on week
RDWC is set for 15 minutes every 2 hours on a 300gph pump

Flower:
My week counter starts over here.
Currently I'm not flowering and not setup yet to flower as many plants, but will list my previous flower setup

5 Gallon buckets 1 site per unit 6 units (RDWC)
30 gallon control bucket
Nutes:
Fox Farms Grow Big Hydro
Fox Farms Big Bloom
Fox Farms Tiger Bloom
Molasses (weeks 3-5 in flower)
Calmag (weeks 3,4 or as needed)
Clear Res (Week 6) (I only use early girl phenos, so most my strains finish in 6 weeks or less)
I use two more additives here that don't effect growth, only flavor
PH 5.6-5.8
PPM Start at 900 slowly increase to 1200 by week 2
RDWC is set for 15 minutes every hour on a 300gph pump

Last 3-5 days I only use resclear + my additives that do not effect yield or plant health.

I check my PH at least 4 times per day. I've noticed when I hit 6, the plants don't like it... Cept for durban poison, that strain loves a high PH and I've gone as high as 6.8 in hydro with it, and it loves it.

Hope this helps
low_rdr Reviewed by low_rdr on . Dubb is back, deficiencies deep water culture, help! rusty color, what is it!? First i would like to welcome myself back to the forums :pimp:. Second i would like to issue a slight problem i have been nailed with. I am week 4 day 2 of veg in my deep water culture set up. I have been hit with a slight issue of some random leaves having a slight rusty looking color. I have been cal-maging water 250 ppm each resevoir. Thus makes me think it is something other than a calmag deficiency. I am using Cultured solution nutrients. Rightnow my ppm is sitting at around 650 give or Rating: 5