Serious Humidity problem

Agent Provocateur · Oct 24, 2009

Ok i never really venture into my tent during dark periods, but having so today i have realised my humidity is a serious issue! ITS 84!!!!!!!!!!! OMG!

Anyway im just entering my 6th week of flower and im worried for obvious reasons about it being this high. Its absolutely fine in the light periods with the HPS glaring down it sits around 40. I didnt think it would raise that much in dark as i have a 150 Vents fan running on intake a 150 Ruck fan on exhaust and a oscillating fan in the tent also. So any ideas what to do guys? Im on limited funds so dont really want to stretch to a dehumidifier unless really necessary, any cheap ways? Will i get mould if these humidity numbers carry on as they are in the dark or will the balance of the light hours carry me through? OMG im desperate please help

Many thanks

Agent xxx

https://www.rollitup.org/grow-journals/247945-agents-first-grow-ww-5.html

Illegal Smile · Oct 24, 2009

Sometimes when you have a lot of time and money in a grow and a lot to lose, you just have to suck up unexpected expenses to save it. I think you need a dehumidifier. You can get a real small one at Walmart for maybe 30-40 that might work in a tent. Remember, if you get bud mould you not only risk losing the crop, but anyone who smokes it can do serious harm to themselves. You want humidity down to the 40s. Is it possible you can just take it out of the tent to finish?

Agent Provocateur · Oct 24, 2009

Illegal Smile said:
Sometimes when you have a lot of time and money in a grow and a lot to lose, you just have to suck up unexpected expenses to save it. I think you need a dehumidifier. You can get a real small one at Walmart for maybe 30-40 that might work in a tent. Remember, if you get bud mould you not only risk losing the crop, but anyone who smokes it can do serious harm to themselves. You want humidity down to the 40s. Is it possible you can just take it out of the tent to finish?

Its in my garage and i live in the UK i dont reckon i can take it out

southern homegrower · Oct 24, 2009

what is the rh% in the room the tent is in

doc111 · Oct 24, 2009

Agent Provocateur said:
Ok i never really venture into my tent during dark periods, but having so today i have realised my humidity is a serious issue! ITS 84!!!!!!!!!!! OMG!

Anyway im just entering my 6th week of flower and im worried for obvious reasons about it being this high. Its absolutely fine in the light periods with the HPS glaring down it sits around 40. I didnt think it would raise that much in dark as i have a 150 Vents fan running on intake a 150 Ruck fan on exhaust and a oscillating fan in the tent also. So any ideas what to do guys? Im on limited funds so dont really want to stretch to a dehumidifier unless really necessary, any cheap ways? Will i get mould if these humidity numbers carry on as they are in the dark or will the balance of the light hours carry me through? OMG im desperate please help

Many thanks

Agent xxx

https://www.rollitup.org/grow-journals/247945-agents-first-grow-ww-5.html

There is a product called damp-rid. You can find it at Bed bath and beyond in the states. Not sure about the U.K. Using a fan in the tent will help a lot. Humidity always rises as the temp falls. I keep my RH at about 50-60% during the day and it jumps into the 70's at night. I've never had a problem but I keep my air moving and good exhaust will help as well.

Agent Provocateur · Oct 24, 2009

Ah this is where the problem lies i reckon outside its even higher, i re-read wat it was inside and it was @ 80% outside it went to 90% before the meter had an eppy and failed to read any higher, so put a dehumidifier outside the tent so that the air going in is at least drier?

2much · Oct 24, 2009

try a marine supply {port supply, west marine, whatever} and get a cabin dehumidifier, it looks like a gold wand about 30 inches long with an a/c chord.probly around 30 bucks these days. just checked golden rod dehumidifier at west marine is 36 bucks

Agent Provocateur · Oct 24, 2009

wat size capacity dehumidifier am i going to need as i dont want to be emptying it every 5 mins

stickey · Oct 24, 2009

i have the same problem, im growing in a garden shed.
i got a small bit of mold had to cut out a nice bud =, but i think i cought it in time,
that was a week ago and havent seen any since.
i put a big bowl of rice in my box, and today i got a yoke you use in a caraven.
http://cgi.ebay.co.uk/KONTROL-CARAVAN-MINI-MOISTURE-TRAP-DEHUMIDIFIER-LAVNDR_W0QQitemZ120466741264QQcmdZViewItemQQptZUK_Campervan_Caravan_Accessories?hash=item1c0c609810

dint know if it works yet but its cheap

doc111 · Oct 24, 2009

Agent Provocateur said:
Ah this is where the problem lies i reckon outside its even higher, i re-read wat it was inside and it was @ 80% outside it went to 90% before the meter had an eppy and failed to read any higher, so put a dehumidifier outside the tent so that the air going in is at least drier?

I keep my dehumidifer outside of the flowering room near my passive intake. It keeps the humidity down without heating up my flowering room.

southern homegrower · Oct 24, 2009

i would do what doc 111 said in his last post #10

Agent Provocateur · Oct 24, 2009

sending the bf out to get a dehumidifier as we speak>>> gonna try the bowl of rice in the tent itself>> cant hurt i guess

doc111 · Oct 24, 2009

Agent Provocateur said:
sending the bf out to get a dehumidifier as we speak>>> gonna try the bowl of rice in the tent itself>> cant hurt i guess

Just remember that your night time humidity will always be higher than the daytime. That's because warm air holds less water or something like that.

southern homegrower · Oct 24, 2009

good luck let us know how it works

Agent Provocateur · Oct 24, 2009

doc111 said:
Just remember that your night time humidity will always be higher than the daytime. That's because warm air holds less water or something like that.

Dont worry im only gonna run this leccy whore of a machine during the dark, im just hoping this addition wont trip my electric in the garage with what i got running- already had to run the HPS and balast off my house supply>>> what a ball ache that was ( well it would be if i had any >> a tit ache instead

)

kevin · Oct 24, 2009

get a fan blowing on your plants. i bought a 200 dollar dehumidifier that sits in storage and a $20 fan that took care of my problem

Illegal Smile · Oct 24, 2009

You need to cut humidity in half. I don't think you will do that with rice or even fans. I'll bet the dehumidifier gets it down, but even at 60 it isn't good.

Agent Provocateur · Oct 24, 2009

kevin said:
get a fan blowing on your plants. i bought a 200 dollar dehumidifier that sits in storage and a $20 fan that took care of my problem

Wat another fan?, already got an oscillating one in the tent already. I guess if theres wet air coming in to begin with all a fan is gonna do is circulate the wet air more not alleviate the humidity per se

aknight3 · Oct 24, 2009

i have high humidity during flowering as welll and use a grow tent, i usually keep it about 70-75 with a dehumidifier (best i can do with my location) and keep a oscillating fan on them 24/7 i have no had bud rot yet (and my humiditiy also used to get to 80 at times) u need to keep fresh air on them and inhibit mold, when your intaking new air into your grow tent, your really taking humidiity and putting it in your room you absolutley have to have a dehumidifier

Serious Humidity problem

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