MorningDew

I installed a CoolTube in my DarkRoom 150 and put a 400CFM fan on it. (That fan is the loudest damn fan - I can't recommend it.)

3rd pic -- this is the damaged end with a light bulb inside shining through all the holes. Apparently the air-blown, heated microscopic particles shooting through there, combined with the folding/unfolding of the plastic and it started to eat right through. Micro-leaks like this upstream of the bulb are not a problem - a little room temp air - but downstream and it's hot enough to scorch your tops, which you want to keep just several inches away from your 'Tube. I had heat burn last grow and this is why.

Here's my solution. This sucker won't be wearing through any time soon. It leaks a bit around the joints so a little d.t. - but this is way better then taping that plastic tubing.

The inner diam of the new piece was such that the CoolTube flopped around a bit more then I wanted when I hooked them up. I popped a rivet on the end of piece and then a 6" clamp squeezed it almost air tight, then d.t.

If you own a CoolTube, don't forget to clean the glass once in a while. Another reason not to have to duct tape the crap out of the connection; peeling it off is no fun.

Peace.

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It seldom turns out the way it does in the song
Once in a while you get shown the light
In the strangest of places if you look at it right

9volt

d.t.? what does this mean?

MJ Maven

I think "d.t." = Duct Tape

Maven

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sek311

GREAT FIX! can't go wrong with steel. There is a product called alumi-flex. High temp applications and insulated with R6. 16 bucks per 8 foot length.

CRAZYTRAIN

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MorningDew

If I were to pull the air through my CoolTube with those holes in the tubing like in the 3rd pic, I'd be drawing in small amounts of non-filtered grow hut air and exhausting it into the room. Not good. Pushing the air, in my opinion, is usually a much better choice for this reason.

I pulled air through when I had a cheap inline fan. I attached it to the downwind side of the CoolTube and pulled air across the bulb. I think that was about the time my brother-in-law smelled fresh ganga stink seeping out from under the basement door.

BTW, that was HydroFarm brand tubing that got ate up - not the cheap stuff.

__________________
Well I ain't often right but I've never been wrong
It seldom turns out the way it does in the song
Once in a while you get shown the light
In the strangest of places if you look at it right