Quote Originally Posted by GluteusMaximus
Hate to chime in on a post to latewood, but I couldn't resiste putting in my two cents worth.

After reading your problem, my first gutt instinct is that somehow those plants that wilted so quickly were starved of water. Here is my reasoning....

If this was a PPM problem, then it's likely that you'd have seen some indications of over/under fertilization from the plants leaves long before it completely wilts.

If this were an oxygen problem, that too should have shown up as a deficiency prior to wilt. Assuming that you had "some" air present in the water.

Water starvation can be caused from lack of exposure to water itself (clogged system), or the inability of the plant to uptake water (pythium). If the roots are suffering from pythium, enough to wilt/kill the plant, then you should be able to detect the odor on the roots. It appears you have everything under control as far as temps/PH/nutes (they don't appear to be too extreem for any grow) so I can't help but believe that the roots are the 'root' of your problem.

When you said the leaves were toasted, did you mean that they looked burnt (spotted, rusty, cooked from heat) or that they were wilted down to a stringy looking green leaf (like cooked spinich)? If they were just wilted and stringy, then that is just the same reaction the stem exhibited due to lack of water pressure in the plant. Soaking the plant in air saturated water should bring it back to life within hours if it's just water starved. If it's pythium, you'll need the power of God to bring it back.
The leaves had displayed some rust spots on them earlier which I treated as a mag deficiency and they seemed to have ceased. The leaves dryed out from the old to the new. They went limp and then proceeded to dry up enough to crumble in your finger within 2 days. I thought maybe the main stem got broken during training but no. I had noticed a sewerish odor from my rez one time after a water change but it went away the next day. The roots themselves don't smell. It definately wasn't heat burn, the light is well cooled as is the room. All fans are working.

Heres one more thing. I had my RO/DI stored away for 2 days in my backroom (which stays at 65 degrees) for security reasons. Do you think something happend to the water that sat in the RO/DI filters rhat could have caused this? I also used that plastic wrap press and seal to put over the top of my buckets to stop debri from falling in them. Could the chemicals on that plastic wrap be the problem. Im stretching here.
BlazeIdo Reviewed by BlazeIdo on . Latewood...help needed Latewood, what could cause instant death to a plant other than over fert. I did everything as I always would with my DWC water change. Fully flushed with RO water. Added nutes, micro first waited 5 min, then bloom,(was using lucas), then sensizym, then calmag, then LK. I addded them at 5M 10B ,10Sensi, 5Calmag, 5LK. per gallon (values are ml). PPm's were at 960, ph 5.8 (checked with two just calibrated meters). I have noticed a bit of black build up on the root base, but I thought it was Rating: 5