Need Help Diagnosing White almost Bleached white leaves of baby clones!

stumped

Active Member
Hi there,

I have been a successfull HYDRO grower for the last 5 years! About 5 months ago every time i tried starting another round of plants, my clones end up looking like this after about one week! My clones never have done this in the past!

Please note, I thought this could be a bacteria or fungus after the last batch of yellow clones, so i stript my room down, bleached all the walls and floors then painted over my walls with KILLS ( paint that kills mold) prior to this batch of clones transplanted!

Before transplanting, All clones had awesome roots (with fine hairs) and for the most part healthy before transplanting into my grow room! THE FIRST FULL DAY AFTER TRANSPLANTING, I NOTICED THE PLANTS STARTING TO TURN A LITTLE YELLOW STARTING FROM THE TOP DOWN! UUGGH!

I am using the 3 part flora series from GH! I started these clones on 1/4 teaspoon per gallon solution! When i noticed the yellowing starting i thought this could be a deficiency, so i added 1 teaspoon per gallon of calmag!

After day 5, i felt that the bleaching could probably be a nitrogen defienciency, so i went to 1 teaspoon per gallon of the three part flora, 1 teaspoon calmag and added floralicious plus to the mix!

Today is day 7 and i notice a hint of green in the middle but really no change!

My room temperature is controlled to vary between 72-78 degrees, my water temperature is exactly at 70 degrees. P.h is always at 6.o (ph twice a day) I have definitely enough light (4 1000 watt lamps in a 10 foot x 16 foot room and the hoods is 6 feet off the ground!)

So, i decided to pull the sickest looking plant up from the rock to see how the roots looked, and 3 strong beautiful white roots poked through the rockwool and they had many feeding hairs! I quickly planted it back!

Does anyone have any suggestions or has anyone ever had this problem! Like i said, i have used this grow room and setup in the past and have been VERY successful at the tune of 3/4 of a pound per plant! I cant for the life of me figure out what my problem could be!

Any insight would be appreciated!
 

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Not only you have enough light as it might be too much light. Damn this thread is old, anyway it might serve as info for someone else, I believe that's light bleaching, I'm having it right now and after some extensive googling it's a combination of too much light and/or heat. Since that one was still "young" she was not ready for a 1000W in the face? Just my 2 googlingcents
 
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