Trying to grow in a 4X4 sunhut. Using a 400w light w/vented hood. 8" fans for intake and exhaust. Using grow medium last ph was around 5.7. I seem to be having constant mg problems. Plants start out great then start to yellow in about 2 weeks. Foliliar feeding with epsom salt seems to help....but I never seem to get a full recovery. I guess my question is how often can spay with epsom salts. Every thing I have ever read never mentions how often. Until I bought the sunhut I grew in a closet. I had pretty good success. Since I have been using this sunhut I can't get anything to grow more than a few inches. I have really tried everything (believe me) to try to fix this...short of moving back to my closet. Any help is greatly appreciated.
Constant Mg problems
- Thread starter fe_1010
- Start date
greenleafhigh
Well-Known Member
Yeah sounds to me your tent is relaseing deadly gases to you plants when the plastic is heated ...put them outside get some freash air and a nice dose of compost tea...
Now i guss you could use the tent as like a drying hut..that would be cool
Now i guss you could use the tent as like a drying hut..that would be cool
Off gassing brother, there is a term you were hoping you would never have to know lol!
It wiped out my last three grows before I even thought along those lines. Here is the progression: After about a week they start to go mg deficient, next they start to overall yellow (like a severe nitrogen deficiency, next growth is stunted and the leafs are starting to bleach out and die back from the bottom up. Nothing you do seems to help. They will recover if you remove them from the environment in about 2 weeks. Not sure though if they will completely recover, might be easier to start new beans or clones.
And here is the kicker, I'm not in a 'toxic tent' I was using spray glue to attach Mylar in a completely sealed co2 enriched space. Needless to say I pulled all my Mylar off, primed with a shellac, top coated with a 0 VOC latex painted so far so good.
Guys, take this serious, the tighter sealed your space is the more we have to be concerned about building materials 'off-gassing'.
It wiped out my last three grows before I even thought along those lines. Here is the progression: After about a week they start to go mg deficient, next they start to overall yellow (like a severe nitrogen deficiency, next growth is stunted and the leafs are starting to bleach out and die back from the bottom up. Nothing you do seems to help. They will recover if you remove them from the environment in about 2 weeks. Not sure though if they will completely recover, might be easier to start new beans or clones.
And here is the kicker, I'm not in a 'toxic tent' I was using spray glue to attach Mylar in a completely sealed co2 enriched space. Needless to say I pulled all my Mylar off, primed with a shellac, top coated with a 0 VOC latex painted so far so good.
Guys, take this serious, the tighter sealed your space is the more we have to be concerned about building materials 'off-gassing'.
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You are most likely the best dad your plants could ever have, you are just not going to win against a 'gass-chamber' brother!
klmmicro
Well-Known Member
Have to add to the "off gassing" discussion, not all tents are created equal. I use a tent and shopped around for one that had been "corrected". I have had no troubles so far. Tested it out on vegetables first to make sure that I had one of the good ones. The NEW tents through HTG are good. My friend had three of them and not a problem with any. My HTG tent is also fine (purchased this year). Call in your order and talk to them about it. They will tell you all you need to know about the PVC tents that caused all the trouble.
