Help, It's getting worse

[McDanger]

I moved these 2 plants from a grow cabinet I had in a garage to the flower room in the basement. and I noticed a couple days ago a few spots on a couple leaves. I thought it was bugs so I have been spraying with neem oil.This morning it spread to more leaves and now it is taking over the plant.
It is 83 degrees and 55% humidity.
In soil, using GH 3part +calmag,liquid karma,hygrozyme. watering with this every 2 days.

McDanger Reviewed by McDanger on 07-13-2008. Help, It's getting worse I moved these 2 plants from a grow cabinet I had in a garage to the flower room in the basement. and I noticed a couple days ago a few spots on a couple leaves. I thought it was bugs so I have been spraying with neem oil.This morning it spread to more leaves and now it is taking over the plant. It is 83 degrees and 55% humidity. In soil, using GH 3part +calmag,liquid karma,hygrozyme. watering with this every 2 days. Rating: 5

[stinkyattic]

Sure that's not just scarring from the previous damage?
Are MORE leaves affected, or is it just the SAME leaves looking worse?

[McDanger]

It looks to be both, the existing damage got worse and it spread to more of the plant. I actually don't think it is bugs any more. I think it is nute lock. Lights are off right now so I have to wait about 1/2 hr. But last night all the new growth looks to be shriveling up. I used straight water from the dehumidifier yesterday so I hope it looks better today, but I think I may need to flush more. I'll get new pics as soon as the lights come on.

[stinkyattic]

I wonder about your neem oil application.
Do you get drips, or do you mist so lightly that it simply coats the leaves? Do you ever see droplets?
Neem or other oil suffocation symptoms can be hard to recognize until you see them for the first time.

[McDanger]

I tried not to spray too much of the neem. I didn't notice any dripping but the leaves were coated. What would be the solution for that?
Here are the pics from today. It looks the same as last nite.

[stinkyattic]

The leaves should be coated, but only lightly so. The finest possible mist you can get.
Something funky is going on with the new growth. GH 3-part... hm. What's the pH of your fert solution RIGHT before application?

Fill out the troubleshooting form completely and let's figure this out.

[McDanger]

I've been keeping it right around 6.0 but I am waiting on a new probe for the tester.(it would not calibrate)It should be in today I hope. I misted the leaves today with rainwater and moved the light up a little, but I don't think the problem is heat from the light.
I'll do the help form a little later, I have to go do a couple side jobs. Thanks for all your help

[stinkyattic]

How often do you mist with rain water? I think we may have found your problem on both counts. Did you know that water, rainwater ESPECIALLY, can leach nutrients out of the leaves? That would explain the pale new growth, and water beading up and burning under the light would explain the rest.

[McDanger]

Indoor, under 400w HPS 12/12 for 5 days so far, in soil, just flushed with rain water then repotted in 5gal bucket with existing soil, added 30% perlite to older potting soil. Rainwater pH 7.0
Lights are 10" from plants
temps go from 69(dark) to 81 w/ light on, 55% rh
I am running an old furnace blower motor for exhaust 4X10 into carbon filter, with (1)7" and (1)6" passive intakes.

The pH probe did not come today, but I used a metal probe one for soil and checked the pH of the soil, (around 5.5). I am not able to check the runoff pH until I get the new probe.

I did not know about the leaching. I have not been spraying the leaves until today because I thought I might have over did it with the neem.

[McDanger]

Would the leaves burn from spraying the neem with the lights on? that would explain why it seems that the lower leaves that are not in direct light do not have the spotting.
How would I fix the leaching? with regular watering? I will not spray the leaves any more.