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I had a similar problem where i live and put a heater in there. just a small one and it worked GREAT! i left mine on all night because even thought the ambient temp of the room will be roughly the same, under the light right where the plants are should still see a dip in temp (which is great)...

Also, this is a FANTASTIC thread to compare too for problems. Also give solutions which i dont find on a LOT of threads. http://www.icmag.com/ic/showthread.php?t=11688

Man, i am going to follow your advice and not do anything to them for a few days, but it feels weird just leaving them with no nutes for 3 days!! lol.. AHHHHH... hahaha but i get it. they need to really get over the problem before they start taking in anything.

What changed a couple days ago? I have had this happen before, but really, you are 7 weeks into it.. you got another week and a half i dont know if i would stress too bad. Discoloration at the end of flower is normal. Also, since this is your first grow, maybe this is just what the strain does...

Yup.. guitar reference :) Yeah, they werent too bad looking yet, although i had the same thing happen last time, i didnt correct it and spent the whole grow trying to combat it, so thanks again for your input!! Just out of curiosity, what made you switch from hydro to soil? also, you said...

Watered last night with about 2.5 gal per cube. water was 11 ppm (that's as low as it gets with my water). had to do it in 3 rounds one right after the other. After the first one, i measured the runoff and my ph was WAY high again (had this happen before for no reason???). Ph going in was...

LOVE the analogy!! Thats awesome! Will do all that tonight. post up tomorrow with an update and we can g from there! Thanks again!! Super appreciate the help!

I have seen sone crazy high ppm well water. Whats the ppm of your water before nutes ?

Thanks!!! So yes, I am top feeding and hand watering already so that will be easy. Just to be clear, my res is fresh every time (drain to waste), and cleaned once a week. the only thing that ever sits in the res (and at MOST its for 24 hours) is plain RO water, no nutes. So i shouldnt even...

holy CRAP thats cold man!!!! well.. good luck and i hope you get it sorted out.

laserbrn your plants look amazing bro!! Nice work!

are you air cooling your light? If thats a 1500w bulb and its 18" away from the plants... try moving it up bout a foot and see if they like it. Not sure if that will fix your problem, but it seems like that is pretty close for that wattage... but a more experienced grower should chime in here...

Was wondering about the 1500w too! would also +1 to the MH for veg.

If run off is 6 but your water going in is 6.6-6.4 then the actual root zone ph should be around 5.5 (cause from what i have seen and read the run off is approximately half way between your root zone ph and the water you are putting in) Check the chart I attached.. hope it helps! Could be your...

intersting... i am have a VERY similar issue with mine, but i am growing in rockwool. check out https://www.rollitup.org/marijuana-plant-problems/494088-quick-help-multiple-deficiency-problems.html Havent solved it yet. What is your PH going in if you runoff is 6?

I dont know much about soil so this could be TOTALLY off base, but what is the ph of the run off when you water? I have a problem last grow (hyrdo) where something was causing my root zone PH to be WAY high and this is what i saw.

I was thinking about this more (and maybe this is what you were saying, i just didnt understand :bigjoint: ) but since there isnt any nute burn, from what i can see or know, and i am seeing multiple deficiencies, maybe your right and they just need more food! and some H202 cause it sure wont...

??? i am confused. There isnt any 1 thing that is affecting all the girls except for the new growth being f'd up as you see in the pics. to me it seems like it is multiple deficiencies. Nothing started at the bottom and worked its way up. Also, my PPMs are not THAT low (week 1 was around 500...

Wheew... i really didnt think it was over watering, but there is always something to learn. ;) So, should i water with full nutes and h202 or do a flush with just RO water, h202, and maybe some CalMag?

THANK YOU for the quick response! I really appreciate it! if you click on the pics you cant see them? Hmmm.. i will try to re upload maybe?? If i click on them i can see them but maybe because its on my computer?? Anyway, yes, right now they are in 6x6 rock-wool only. When i move to flower...