Dehumidifiers....anyone use these?

[Ferrethead]

Came across these on eBay, any seen or use them?

 

http://www.ebay.com.au/itm/Two-Pingi-dehumidifier-bags-XL-450gr-one-free-Pingi-Bag-Mini-150gr-/110862594666?_trksid=p4340.m444&_trkparms=algo%3DCRX%26its%3DC%252BS%26itu%3DSI%252BUA%252BLM%252BLA%26otn%3D12%26ps%3D63%26clkid%3D4089342820661983225#ht_884wt_922

 

Being silent is the main thing that has my interest. I'm a long way from flowering but looking at options. Thinking I could hang up 4, one in each corner to help with humidity during flower. Thoughts?

[brick]

They would be bags of silica gel by the looks of things. Reusable is a good thing.

[Matanuska Thunder]

I didn't see what the active ingredient was... tho

Like brick said sounds like silica, if so, it is GREAT stuff for dehumidifying.

I used it for quick-drying herbs (real herbs). Never tried on a grow-room scale, can't see why it wouldn't work

 

I'd buy/use it if I needed it

[Ferrethead]

Thanks for the quick replies guys.

 

I'm going to give it a go. Not sure if they'll work with the rate I'm turning over air in my tent, but its worth a shot and they aren't very expensive. Been averaging about 50/55% humidity in my tent over the last week since its been running. Today it's up to 67% due to some slight drizzle outside. I think 67% would be troublesome when flowering.

 

Found a good suggestion while surfing the net. Should solve humidity issues for those of us moving lots of air.

 

Revolves around having a tub of silica gel (kitty litter or commercial grade which you can reuse) somewhere in your intake chain ducting. By sucking all the air that enters your tent through the tub of silica gel you're absorbing excess moisture......or so the theory goes.

 

Bottom line, could be a cheap solution to a problem plaguing many. I'll give it a go in a month or so.

Edited December 12, 2012 by Ferrethead

[Badseed77]

I have used somethings similar and imo anything that passively dehumidifies does not do a very good job and may only lower humidity around 5% , that is what i found .

Next year i will try a proper dehumifier for my tent as i think a active dehumidifer would help a hell of lot more .

[Ferrethead]

I have used somethings similar and imo anything that passively dehumidifies does not do a very good job and may only lower humidity around 5% , that is what i found .

Next year i will try a proper dehumifier for my tent as i think a active dehumidifer would help a hell of lot more .

 

Thanks for sharing your experience. Was thinking of following a DIY carbon filter instructions but using silicon instead of carbon, and blowing not sucking.

 

Are you talking about what I've mentioned here or hanging the silicon gel bags in the tent?

[Badseed77]

The things i used where bags you hang in the tent .

You need to remember these things dont last , once they are full of moisture they will stop working . The moisture pulled from the air must go somewhere!!

They only hold so much and you get a bit of rain they will be useless pretty quickly. The bag thing i used had 2 section the upper was the beads and lower was where the dissolved beads dripped the water . It held maybe 1-2 Lts . 1-2 days rain and its full , then it wont pull anymore moisture out of the air .

Any thing passive you use will only pull so much moisture from the air and then it will not work .

Some dehumidifier say they can do like 30 lts a day , nothing passive will ever come near to pulling that amount of moisture from the air .

 

I would not waste my time with anything passive ,being from brissy you will not be able to deal with the humidty that is in the air over summer let alone what builds up in a tent with plants in it .

 

Cheers

 

Badseed

Edited December 12, 2012 by Badseed77

[-SLIPPER-]

I have used the damp rid containers before, same concept im guessing.

They needed to be emptied and topped up about every 2 days.

I dont know how much they lowered the humidity, because at that stage i wasn't measuring it.

These days i use a dehumidifier, i think its rated at 14L a day. Cost me about 300 bucks.

The downside of the dehumidifier is that it adds extra heat to your growing area.

Where i live, its the only way to keep the bud rot at bay during summer.

[Naycha]

I have used the damp rid containers before, same concept im guessing.

They needed to be emptied and topped up about every 2 days.

I dont know how much they lowered the humidity, because at that stage i wasn't measuring it.

These days i use a dehumidifier, i think its rated at 14L a day. Cost me about 300 bucks.

The downside of the dehumidifier is that it adds extra heat to your growing area.

Where i live, its the only way to keep the bud rot at bay during summer.

 

Just wondering the size of your room, how many watts the dehumidifier uses, and how much it drops the humidity if you know?

 

Cheers.

 

Naycha

[-SLIPPER-]

The room is basically a large built in cupboard ,approximately 2.5m long but only 60cm deep.

Running 2x600 in cooltubes.

I can normally keep the humidity below 65% ,where as without it can get over 90.

I live on the coast in North Qld, so heat and humidity can be a real drama.

Not sure on the wattage of the dehum, ill have to check that one.