Humidity to high?

[Learninggrower]

Ok I’m 55ish days I to my grow and my temps are about 23c but my eh is in the 70%. I run dwc in a hot attic and I have a dehumidifier in the tent now but it itdidnt bring it down to much. I’m worried about getting mold or bud rot. I have a clip fan in there and a 6inch exchaust fan running also. Any help is awesome

 

[Learninggrower]

I have a grow thread on here with pictures.
http://www.autoflower.org/threads/new-grower-vast-and-vast-auto.65379/page-15#post-1822271

 

[Simplicio]

We hydro growers don't have all the microbes that dirt growers do, so we don't need to worry much about bud rot.
Your humidity will go down a lot if you raise the temperature. I'd guess a 3 C temp increase would lower humidity to the low 60s.
But don't overdo it. These weeds LOVE high humidity!
Staying in the green zone of the following chart will maximize growth.
But that can be a problem for some of us, because even autos can grow into the lights.
I've had to top a 5 ft tall WorldOfSeeds NLxBB, and it's growing back into the lights.

 

[Learninggrower]

We hydro growers don't have all the microbes that dirt growers do, so we don't need to worry much about bud rot.
Your humidity will go down a lot if you raise the temperature. I'd guess a 3 C temp increase would lower humidity to the low 60s.
But don't overdo it. These weeds LOVE high humidity!
Staying in the green zone of the following chart will maximize growth.
But that can be a problem for some of us, because even autos can grow into the lights.
I've had to top a 5 ft tall WorldOfSeeds NLxBB, and it's growing back into the lights.

Ok I haven’t seen any mold and I didn’t know anything about bud rot but knew it was from humidity. Thank you for the info my plants have been growing like champs other then the humidity which I was worried about. There is no lack of it in my attic lol. Any other tips on my journal would be very much appreciated since no many grow with hydro on here

 

[Simplicio]

Ok I haven’t seen any mold and I didn’t know anything about bud rot but knew it was from humidity. Thank you for the info my plants have been growing like champs other then the humidity which I was worried about. There is no lack of it in my attic lol. Any other tips on my journal would be very much appreciated since no many grow with hydro on here

Bud rot isn't an issue in hydro, but over-feeding is.
As soon as you start seeing yellow leaf tips, reduce the nutes, otherwise it can degenerate into gold splotches, injured leaves, and sick plants.
1/4 to 1/2 of what nute pushers recommend is usually plenty for dwc, assuming good aeration of roots.
Too much will cause sick plants that will exhibit all sorts of deficiencies. Imagine how you'd feel if someone shoved 10,000 calories a day down your throat.
Make sure you have ppm (also called EC or TDS) and pH meters.
Buy bloom boosters, elixirs, and teas only if you suspect that nute maker profits are insufficient.

 

[Learninggrower]

Bud rot isn't an issue in hydro, but over-feeding is.
As soon as you start seeing yellow leaf tips, reduce the nutes, otherwise it can degenerate into gold splotches, injured leaves, and sick plants.
1/4 to 1/2 of what nute pushers recommend is usually plenty for dwc, assuming good aeration of roots.
Too much will cause sick plants that will exhibit all sorts of deficiencies. Imagine how you'd feel if someone shoved 10,000 calories a day down your throat.
Make sure you have ppm (also called EC or TDS) and pH meters.
Buy bloom boosters, elixirs, and teas only if you suspect that nute maker profits are insufficient.

I normally only do half strength but thinking about going to 1/4 just to be safe. Just started seeing yellow tips thoughtmaybe it was cause of the phase they are at. Thank you for the tips

 

[Learninggrower]

Bud rot isn't an issue in hydro, but over-feeding is.
As soon as you start seeing yellow leaf tips, reduce the nutes, otherwise it can degenerate into gold splotches, injured leaves, and sick plants.
1/4 to 1/2 of what nute pushers recommend is usually plenty for dwc, assuming good aeration of roots.
Too much will cause sick plants that will exhibit all sorts of deficiencies. Imagine how you'd feel if someone shoved 10,000 calories a day down your throat.
Make sure you have ppm (also called EC or TDS) and pH meters.
Buy bloom boosters, elixirs, and teas only if you suspect that nute maker profits are insufficient.

This just appeared yesterday is this nute burn?

 

[Simplicio]

This just appeared yesterday is this nute burn?

It's hard to know what's going on when leaf problems happen.
Reducing nutes MIGHT stop this, and won't harm the plants.
If you did reduce nutes, it could take several days to notice the difference.
pH could also be an issue.

 

[Waira]

Ok I’m 55ish days I to my grow and my temps are about 23c but my eh is in the 70%. I run dwc in a hot attic and I have a dehumidifier in the tent now but it itdidnt bring it down to much. I’m worried about getting mold or bud rot. I have a clip fan in there and a 6inch exchaust fan running also. Any help is awesome

LG- most bud rot is caused by botrytis mold, which needs the right environmental conditions to activate and start invading buds.. high RH% and usually low temps are key activators but once started, it tolerates a wider range of RH and T's to invade! Higher T can help with high RH% to keep it from going nuts,... The spores are basically everywhere, as it's so common and the spores are micro-small, the wind carries them like smoke practically,... what happens is the spores land on the plant and just sit there,.. may not ever activate, but if the conditions are right, they will,... bud literally grows around the spores, and that's the problem,.. the internal env. of the buds is nice and cozy as is ,..... This my war every year outside, so mold I know well, plus all that I see here in Sick Bay from a variety of grow methods and conditions,.... the spores will enter the plant tissues and travel up the vascular system, so rot starts from the inside out,.. only after it matures does it reset more spores, which can all happen very quickly at time! Usually the only outward indication early on is the odd looking leaf/sugar leaf, wilted, discolored,.. a tug on it may pull it right off,... then it's basically time to treat it like gangrene,... if you get mold, holler at me and I'll go through the method for cutting it clear,... BUT make no mistake, your grow method has nothing to do with it, plenty of hydro growers get mold! You have been given irresponsibly bad info about that, trust me,....
... get me a closer shot of the affected leaves, I can't quite see the details,... I need more info on your nutes, dosages, pH and EC/ppm's, and if there's been a temporary hiccup in pH recently,...

 

[Simplicio]

LG- most bud rot is caused by botrytis mold, which needs the right environmental conditions to activate and start invading buds.. high RH% and usually low temps are key activators but once started, it tolerates a wider range of RH and T's to invade! Higher T can help with high RH% to keep it from going nuts,... The spores are basically everywhere, as it's so common and the spores are micro-small, the wind carries them like smoke practically,... what happens is the spores land on the plant and just sit there,.. may not ever activate, but if the conditions are right, they will,... bud literally grows around the spores, and that's the problem,.. the internal env. of the buds is nice and cozy as is ,..... This my war every year outside, so mold I know well, plus all that I see here in Sick Bay from a variety of grow methods and conditions,.... the spores will enter the plant tissues and travel up the vascular system, so rot starts from the inside out,.. only after it matures does it reset more spores, which can all happen very quickly at time! Usually the only outward indication early on is the odd looking leaf/sugar leaf, wilted, discolored,.. a tug on it may pull it right off,... then it's basically time to treat it like gangrene,... if you get mold, holler at me and I'll go through the method for cutting it clear,... BUT make no mistake, your grow method has nothing to do with it, plenty of hydro growers get mold! You have been given irresponsibly bad info about that, trust me,....
... get me a closer shot of the affected leaves, I can't quite see the details,... I need more info on your nutes, dosages, pH and EC/ppm's, and if there's been a temporary hiccup in pH recently,...

I too have read all those warnings about high humidity and bud rot.
But I was skeptical enough about them to still follow the VPD chart thru harvest, and it calls for high humidity.
Undoubtedly some hydro growers get plant disease.
But I've never had bud rot running my RH in the upper 60s thru harvest. I do have a small space with good air flow and movement.

Introducing unclean dirt into the grow setup has to make the grow space more vulnerable to disease than with hydro.
Although a different living organism, introducing bought clones into the grow space can also introduce pests, according to many posts I've seen.

The advice to keep humidity high thru harvest, and to not worry about bud rot, is at odds with traditional wisdom, and comes from my own experience.