My plants are going yellow and roots are a tan color.

[kz1000r]

Hi
I have 9 plants in one 25 gallon table/tub. I am only having trouble with 6 of the 9 that are 3 weeks behind the other three that are doing great. I have tried adding Epsom salts and now I am just back to using the bloom/bud booster but there is no change ether way. I will try to post some pics and I will also add to this post a questioner that I have answered and I hope it will help you help me. I am beginning to wonder if it is the effect of the spray that was mostly on these 6 for the mites and the plants are weak due to it's use. The roots on the 6 are healthy but they are not white but a light tan color. The other three are white and the whole plant as a whole is doing great but keep in mind all these plants are in the same solution.

What is your experience level? (first timer, novice, experienced...)...
High novice (no pun intended)

Your Equipment:
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's)...
250watt Venture Lighting Metal Halide
430watt Hortilux Super HPS
Single CFL for cuttings

.2) Distance from tops?....
8"-12"

.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...)...
Bat Wing

.4) Is there a consistent fresh air supply?....
Yes

.5) Do you have an exhaust fan and a circulation fan?....
Yes

.6) What are the bulb wattages, kelvin ratings, and schedule?....
430watt is on 12/12
250watt is on 16/8

Your medium:

.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...)....
Expanded clay

.8) Size of container....
25 gallon 15 spot table, (I utilize only 9 due to room constraints)
Mother in a 5 gallon bucket or soiless mix (I go back and forth with each generation)

.9) Did you use peat pucks (or similar) to root clones or germinate seedlings?....
No, I use a homemade aero cloner.

Your nutrients and water:

10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting?....
Tap, 8.0ish


11) Method of checking water ph. (ph pen, test strips, aquarium test kit...)....
Ph pen.

12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...).... Phosphoric acid 85 % and Baking Soda.


13 Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule....
Dutch Nutrient Formula 2 part nutrient.
Gro. A. 2-0-2
B. 0-1-3
Bloom A. 3-0-3
B. 1-0.5-3
Gro- 5ml of each A and B per litre changed every two weeks
Bloom- 5ml of each A and B per litre changed every 1.5 weeks

14) How often are you watering between feedings, and how much per watering?....
1.5 weeks and I top up maybe 3 gallons.

15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
Dutch Nutrient Formula Bud-Booster 0-50-30. 1/2 tsp per 5 gallons
used during weeks 3, 4, 5, 6, 7. With each water change

16) Are your ph levels stable, or do they fluctuate?....
5.6-6.0 and they do drop to low 5's and I then use baking soda to raise it to high 5's.

17) What is your ingoing water's ph? ...your runoff ph?....
In going, 5.8 to 6.0 with nutrients

18) Do you foliar feed? If so, with what, how often, and at what time do you spray?.... No

Your grow room:

19) Indoors or outdoors?....
Indoors

20) What size of closet, room or hut?....
Drywall/insulated closet 6'x6'x7 ceiling.





21) What are the temps and humidity levels while lights are on? ...With lights off?....
On-high 70's, off- High 60's
humidity maybe 40's
Solution, 68 with submersible heater


22) Have you seen signs of insects in the grow room?....
Yes, spider mites twice. The last time I found them (2weeks ago) I was taking this set of clones. I immediately trimmed the mother way back and sprayed both the new cuttings and both mothers with Air Guard Konk House and Garden water based safe on vegetables. I only sprayed once and am currently using "no pest strips" and hoping this will control them, one with mother as well as one with flowering. I did reluctantly use spray upon initial discovery but I am hoping the pest strips alone in my small room will be enough. So far no more sightings and I am looking.

Your strain:

23) What strain are you growing? (Indica dominate or Sativa dom?)....
Indica (Gremlin)

24) From seeds or clones?....
Clones. Mother is about 8th generation from original.

25) Is this an auto-flower strain?....
No

kz1000r Reviewed by kz1000r on 03-06-2011. My plants are going yellow and roots are a tan color. Hi I have 9 plants in one 25 gallon table/tub. I am only having trouble with 6 of the 9 that are 3 weeks behind the other three that are doing great. I have tried adding Epsom salts and now I am just back to using the bloom/bud booster but there is no change ether way. I will try to post some pics and I will also add to this post a questioner that I have answered and I hope it will help you help me. I am beginning to wonder if it is the effect of the spray that was mostly on these 6 for the Rating: 5

[kz1000r]

some pictures

[kz1000r]

and more pics