Light Poisoning/Bleaching Or Signs of a Bigger Problem.

[deadbeef]

Hello,

PH: 5.8~6.0
Lights, 4 2ft Compact HO T5, (HTG TEK lights)
Strain: Querkle
Medium: Rockwool / Top drip

This is a new strain for me and they appear to be having some issues with the way I normally do things.. It looks alot like the light bleaching photos in the pictorial help sticky post.

Any idea what this may be? The new growth appears to be bright neon green, I had a power outage and my lights didn't reset on. I am guessing that they have been without light for about 4-6 hours (usually 24/0).

I did have a slight PH problem (runoff @ 7!) and I flushed out yesterday until the runoff was @ 5.7. This new neon green growth happened today and did not look this way this morning. There are some slight problems with some spotting in the center of the leaves as well

Anyway, what says you?

 

[Ambitious Intentions]

could you tell me what my ec reading should be if I put 7ml of nute in a litre of water? should I be getting around the 10 mark? thx

 

[JJ Bones]

Having the lights off for 4-6 hours is no big deal, they won't be affected by that.

It appears it could be an Iron deficiency because it seems some of the yellow/neon is starting at the base working its way to the tips. Are you using Cal-Mag? If you are does it have iron in it?