Green Crack Flatlining

Hey Guys-

Got 12 clones 14 days ago and have them going in a hydro ebb and flow system. They were rooted when I got them, but I idled them for 10 days on just plain water (ppm around 100) to get their roots established before I boosted the nutes. The plants weren't doing anything so I decided to add a small amount of nutrients to give them a kick start, and for the most part this has made a tremendous difference. I bumped the ppms up to about 300 and the plants are responding well with one exception.

One of the Green Cracks looks like it's on the verge of death. I don't know what the problem is, so that's why I'm consulting you! Please let me know if you have any suggestions/comments/remedies to save the poor girl. I'd suggest flushing her but the other 11 are doing so well with the low level nutes that I'm not sure if this is the best route.

Some other info--

• My pH is stable between 5.7-6.3
• Day time temp fluctuates between 72-80 degrees
  • Night time temp fluctuates between 62-70 degrees
• Using 25% strength BC Grow/Boost nutrients that came with the system
• Running two flood cycles per day, 12 hours apart for 15 min each
• 1000w MH lamp--a good two feet above the plants
• Attempted some foliage feeding, hasn't really made any difference

Thanks! Check out the pics and help me please!

FattyCaps

some just dont make it no matter what you try

Yea, I know I've said a prayer but that's all i can think to do unless anybody has any suggestions

FattyCaps

Could it be too cold?

FattyCaps

lol, same prob. same strain. this is what i did. I pulled them from ebb and flow and put them into 3 inch netpots. I put them in the bottom of the netpot and filled the rest with hydrton. Then I took a five gallon bucket and with a hole saw drilled enough holes for all the crack clones. I let the water a few inchs below the netpots bottoms. In a few hours the roots had started to perk up. Then they took a few more days and they were all white rooted and established. Then back into one gallon pots for the ebb and flow.

Take a peak at your roots. Are they brown? You might be flooding too much. Is the peat puck dried out? Maybe you are not flooding enough.

think this description describes those pics?:
Leaves are curling and turning yellow. then getting brown spots later

then go to this link by uncleben:https://www.rollitup.org/marijuana-plant-problems/150004-plant-moisture-stress-symptoms-solutions.html
and here's a thread very similar to yours with some good advice also:https://www.rollitup.org/marijuana-plant-problems/391527-leaves-curling-turning-yellow-then.html#post5035610

hey a 1000 watter? two feet? You are prob frying those babies.

Really, cause I use air cooled hoods/1000 watt bulbs and they are 6" from the closest plant and are thriving.

tea tree said:

hey a 1000 watter? two feet? You are prob frying those babies.

Click to expand...

Yea pretty sure it's high enough. It's been on them for about 2 weeks now and I haven't seen any signs of burning. If anything it could be closer but I want better light distribution. Checked the girls this morning and the GC is doing a little better than yesterday. One of my Juliet's had her roots come through this morning though! Very exciting news!

I'll keep monitoring the sick GC and we'll see what happens.

FattyCaps