root system...and generally what you think

i would like to know what causes a underdeveloped root system. could it be lights....mine r 3 18 watts 1 t12 and 11000 watt (I RUN the 1000w OFF AND ON BECAUSE OF TEMPS) ......i also squeezed the cubes a little early on and now there all out of shape...could it be from my squeezing ...or could it be from nutes my ppm is at 575 ph is at 6. must forgive me i'm typing with a ps controller thx 4 even taking interest .....also it has been 4 wks from seed. 2 wks actually in a res
started with 6 plants in a homemade dwc. i realized the pump was not getting enough bubbles to all 6 plants. the 1 with the least bubbles began to yellow an brown the one with the most was the tallest. decided to check the roots 1 day last wk and noticed brown sh*t around the rw and some of the roots had brown sh*t on them. panicking i threw out the ones with the heavy brown on them because they were all in one tote and i did not want to get them all infected if it was pythium.i also performed root cuts on one . i put that one in a black bucket system that came with the pump & hydroton and the other in a homemade net pot with hydroton. i hand feed the pot and the other one bubbles.the one in the bucket droops a little but other than that everything is good. and after all that i realized it could be just the gh micro turning it brown. i still think it should be more roots ...and i feel like it should be more growth. so again could it be squeezing the rw cubes....only having 3 18w cfls and 1 t12 or something with nutes. I finally have pictures to show.....the one in the bowl has leaves that are starting to yellow at the bottom and the one in the bucket(the one i cut)has a white tint to it at the start of some of the leaves but it was way worst than that. It drooped for like a week...i am trying to build up my skills and would love to hear your diagnosis.....took them with a camera phone so there not the best.....plants are going on 6 weeks in 4 days since planted from seed
 

brokeandwise

New Member
Well ppm should be much higher. ppm starts out with germed seeds freshly planted at 900, and by a couple weeks should be near 1400+. Probably starving IMO.
 

robert 14617

Well-Known Member
Plant Moisture Stress - symptoms and solutions
the roots are not getting enough oxygen which creates an anerobic condition causing root decline and root rot with the end result showing up as leaf stress, stunted growth, and in severe cases, death. <gasp!> Alot of times folks think the plant is not getting enough plant food (which it can't under such adverse conditions), they add more nutes for a "curative", and just add insult to injury.

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this was clipped from uncle bens Plant moisture symptoms & solutions this applies to your system as well lack of 02 will cause the brown shit ,root rot
 
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