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I'd second that notion. 36C is hot, especially for the little ones. Is that ambient temp? It can be much hotter under the lights.

hmmmm, yet another good idea....

Yeah, I'm going to have to pay much more attention to these forums for the great advise. In the past I only had one room and always wished for two for the flexability. I'm always trying new strains and methods, tinker with some breeding, etc... so the flexability of always having one room in veg...

Because I have mothers in perpetual veg to take clones from.

Thank you very, very much for your advise. Yes, the pots do have "root holes"... I'd try your method of filling the entire grow tub up with the Hydroton, but then I couldn't move the plants from veg to flower (different rooms, of course). I'm using a 3x3 tray in veg and a 4x4 tray in flowering...

Obviously I'm in need of some hydro tips... However... this only applies to the clones in hydro. My moms aren't starving, but they have the same problem :(

Good point, but I will mention two things... 1. Even if the 60pmm TDS in the tap water was all sodium cloride (which I'm sure it isn't), that's still less than 1/2 of what Cervantes says is safe for mj in the grow bible. 2. I've always used tap water in past years and never had a problem...

Ok, just got home from work. Wow, 1 hour on and 2 hours off? Considering I have no experience in hydro compared to your 20+ years... I'll definately take your word for it. 20 years in hydro? Damn, that's some experience. I've had a hard time finding any info about timing cycles. I have read...

Yeah, tell me about it. The weird thing to me is how in the past at another house, I never had problems, and the attic in that place was a mess... the growroom wasn't insulated, used a cheap bathroom exhaust fan, and got too hot (100F). I used rapid grow when I could find it and miracle grow...

Hola POTUS, good to meet you as well... Good point about flood and drain cycles, especially since I'm new to hydro. I flood for 15 minutes. Initially the flooding was every 4 hours, but I cut it back to every 6 hours. Those containers are 6" square pots. The bright green pics where clones in...

Like a basement or celler? No. The rooms are in the upstairs attic.

I picked up a cheap CO2 test kit today and will be checking ppm later after the lights come on to see if they are too low. There is some negative pressure in the rooms since they are so tight (except about the doors where there is a little bit of leakage), could this lead to any of my problems?

Cool, I'll PM him.

Hey, I definately appreciate it, seriously... All of the plants are growing right now, moms from seed in pots, and clones in hydro, with 6 other clones from the same moms still in veg in hydro (new moms). Even these in veg are starting to see the problem, so yeah, the problem is universal in my...

Well, the plants from seed were on botanicare pure blend pro grow with some sweet and thrivealive and 10 weeks old when the perfectly healthy plant started looking bad. One by one. Very slowly. One of the older plants still really hasn't been hit by it much. It's one of the plants furthest from...

Yeah, I know what you mean... it DOES have to be something, and I am seriously obsessing about it... It's sooo frustrating, I feel like I've tried everything... short of starting from scratch and seeing if the problem pops up again. But jeeze, I really need to figure this out, if not for the...

I honestly have no clue. I've tryed everything I can think of, read about, or otherwise. I've had NO problems doing this in past years. This is like an episode of "House" for me... and it's not very fun.:( Anyway, here's some new pics that show how the lower leaves are totaly fine (and will...

I appreciate it man, but I've looked at those pics at least a hundred times. The solution is the same anyway. Flush, new nutes etc... Been there, done that.

Hello everyone. First of all, I'm not a novice grower, and have never really had any problems growing in the past, despite growing indoors in less than ideal conditions (too hot, plants getting to close to the lights, miracle grow, etc...). I've started growing again at a different location and...

Well... yesterday, I wasn't happy with progress, and some plants looked worse, so I checked the run-off from the plants with a ppm meter and it looks like they were not all the way flushed. Average ppm was 400-600ppm with one at 1000. :eek: pH was 6.3... BTW, 7 plants total, 5 in 3gal...