Grow tent 600w hps hydro under construction

anon1122

Well-Known Member
Looking good Anon - what day did you flip to 12/12?

12/5/09 is when I switched to flower.


It's not AC on the wall rubber, it's a fan that is suspended by a pulley I rigged up. Each fan can be set to a different speed. pretty handy.
 

MEANGREEN69

Well-Known Member
good looking girls, your going to need cal/mag soon if you dont already have? judt seems to be used faster in hydro.
 

anon1122

Well-Known Member
good looking girls, your going to need cal/mag soon if you dont already have? judt seems to be used faster in hydro.

I dont have calmag. I thought ff nutes would have all that in it. I'll look at the calcium and magnesium ratings on it. They seem to be going along flawlessly right now though. *knocks on wood*
 

laserbrn

Well-Known Member
From this morning. Are they looking ok to you laserbrn?
They look pretty good for about 3 weeks into flower from what I can tell. If you could take a picture with the lights off it would go a long ways. Can't really tell the condition of the leaves or the coloration with the HPS photos.

Maturity and growth look on pace, but I certainly can't see any "early signs" with an HPS photo. They generally have to be pretty tore up to tell with photos with lights on.
 

MEANGREEN69

Well-Known Member
I dont have calmag. I thought ff nutes would have all that in it. I'll look at the calcium and magnesium ratings on it. They seem to be going along flawlessly right now though. *knocks on wood*
most nutes do have cal/mag but in hydro thats one of the fist things to

go...your plant look great by the way..didnt mean they looked bad..was

just giveing you a heads up cause you dont want anything going south

at this point....
 

smokingrubber

Well-Known Member
So you ripped them off? That was mean. I dont know whats wrong with them, but it looks like you won't have to worry about them any longer.
 

Bob Smith

Well-Known Member
Im probably freaking out over nothing. It looks like light bleaching. what do you think? It was only on 2 leaves near the top on one plant. Let me know!!!
How far is (was) the light away from the leaf in question?

And what do the two infected leaves have in common? Both high on the plant, low on the plant, next to a fan, etc............
 

anon1122

Well-Known Member
How far is (was) the light away from the leaf in question?

And what do the two infected leaves have in common? Both high on the plant, low on the plant, next to a fan, etc............

High up towards the top. they were next to a fan, and symmetrical. Temps are not high, and humidity is in check.
 

Bob Smith

Well-Known Member
High up towards the top. they were next to a fan, and symmetrical. Temps are not high, and humidity is in check.
So the leaves were high on the plant, but not the highest (or closest to the light)?

Well that would seem to rule out light bleaching............

And they were the two leaves closest to a fan, huh?

Even though that's interesting and could be a clue, it still looks more like a nute/pH issue to me................what's the current TDS and pH?
 

anon1122

Well-Known Member
So the leaves were high on the plant, but not the highest (or closest to the light)?

Well that would seem to rule out light bleaching............

And they were the two leaves closest to a fan, huh?

Even though that's interesting and could be a clue, it still looks more like a nute/pH issue to me................what's the current TDS and pH?
Come to think of it, I did have a bit of a ph fluctuation the last day or so, but it's been stable and ok for the last 24 hrs. Maybe it was just working out the stress of that from the other day.

They are 5.8-6.0 right now. At one point a couple days ago, saturday or sunday, they hit 6.4, overnight and I didn't catch it till morning. The other 2 are ok though, so maybe that one is just more susceptable to ph fluctuations. Ill keep a close eye on them and let you guys know.
 

Bob Smith

Well-Known Member
Come to think of it, I did have a bit of a ph fluctuation the last day or so, but it's been stable and ok for the last 24 hrs. Maybe it was just working out the stress of that from the other day.

They are 5.8-6.0 right now. At one point a couple days ago, saturday or sunday, they hit 6.4, overnight and I didn't catch it till morning. The other 2 are ok though, so maybe that one is just more susceptable to ph fluctuations. Ill keep a close eye on them and let you guys know.
Anytime I let my pH go over 6.0 I run into problems, so I think you're onto something.
 

smokingrubber

Well-Known Member
My ph slowly rises over the course of the week. It's stabalized quite well now that I've switched to GH nutes, but it still went from 5.8 to 6.0 in 4 days. Anyway, I've let it go as high as 6.4 without seeing any effect on the plants. Again that was a gradual float, not a spike like you described.

Can you train those branches to avoid the direct fan? It's obviously causing some kind respiration issues with those leaves. Is your fan oscilating?
 

anon1122

Well-Known Member
no oscillation, just blowing. the airflow hasn't affected it though really. I think it was the ph spike.
 

Dubble

Active Member
Great Thread... I just picked up a Grow Lab GL 120 and already have a 400w digital ballast. I still need to pick up a couple of inline fans, and some bulbs. I have a noobish question I was hoping you could answer for me. I bought a lumatek digi ballast and I'm a little confused. It says it can run both mh and hps bulbs. Is the bulb fitting different with each type of bulb? Can i screw in both hps and mh bulbs without modding anything? Just plug n' play? I also was wondering if you had any suggestions for fans. I'm planning on picking up a Cool Sun Reflector - 6".

Given these parameters what would you choose? I realize I bought a rather large tent and have rather low light, but I think I can pull it off with a 3x3 tray. I plan to have 2 400w lights some time in the future.

I have learnt a lot following this thread from start to finish and the nutes chart was great. Any advise is much appreciated.
 
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