Cool Tubes Cracking ?

[jaykush]

only problem i could see is if your bringing air in from outside and its REALLY cold. like below freezing, bringing the cold air in too fast could break some glass but i highly doubt it.

 

[Hey Fisher]

i had forgotten to peel the clear coating off of the reflector inside the tube, ran the light for 10 minutes with no fans, and almost caught my grow on fire. so just remember to peel the film off. other than that, no problems.. but i don't think they throw light as well as a sunspot 6. the cool tube runs hotter as well.

 

[clowntown]

only problem i could see is if your bringing air in from outside and its REALLY cold. like below freezing, bringing the cold air in too fast could break some glass but i highly doubt it.

Only if you allowed your Cool Tube to run hot (without air moving through it) first. Only a dramatic change in temperature would cause this... or the temperature outside was os cold that it cooled the glass down to below cracking temperature itself even with the bulb on (probably impossible unless you live in the North/South Pole).

 

[BenitoCereno]

Hey clowntown, that silverstar does look nice...

 

[drpepper]

What could you use to make an internal reflector in a cool tube? Mylar, or would it just flame up? I've got a bake-a-round that I'm going to build a cool tube with

Dp

 

[jaykush]

Only if you allowed your Cool Tube to run hot (without air moving through it) first. Only a dramatic change in temperature would cause this... or the temperature outside was os cold that it cooled the glass down to below cracking temperature itself even with the bulb on (probably impossible unless you live in the North/South Pole).

yea but if you have to think of something that could go bad that would be it i think, although it would be really rare if it did and would have to be hella cold outside.

 

[clowntown]

What could you use to make an internal reflector in a cool tube? Mylar, or would it just flame up? I've got a bake-a-round that I'm going to build a cool tube with

Yes, Mylar is very flammable, so don't even think about doing this. Try holding a small strip of Mylar near a lighter flame, and see what happens! Any high reflective metal would work. I've seen some grow shops that even sell sheets of the polished "crumpled" reflective aluminum!

Don't forget the "V" in the center above the bulb... this helps deflect the light away from the center, so that light going up doesn't have to reflect straight back down through the bulb itself.

 

[clowntown]

My Cool Tube just arrived, from MD Hydro.

They listed it on their website as a "Kool Tube" which had me thinking it was just some random knock-off version of the Hydrofarm Cool Tube. Not that you can really screw up in replicating something so simple and straight-forward. I was surprised to open the box to find that it was actually a Hydrofarm Cool Tube!

Very solid construction, really nice, solid aluminum ends, and even came with an adjustable side reflector kit! These side reflectors allow me to have extra reflection on the sides, sorta like a batwing reflector would do, except it is adjustable so that I can focus the light down a narrower area or a wider area simply by mounting it one way or another.

Not sure if it was a mistake or not, but they sent me two sets of hanging kits... no use for them really right now, but always nice to have an extra set!

Pretty fucking nice, for $59. I didn't even have to pay shipping on it, since they didn't charge me extra shipping when ordering it with a Lumatek ballast!

 

[Guest]

MDHYDRO.COM is the shit diggity and Clown I had to settle for the lumateks recently as well.......Wanted the lumenace but was outta stock and hadta pay more for the lumateks............Still the absolute cheapest including shipping website on the net...............Lumenace carries 5 yr standard warranty and were $199 with the detachable cord as well as the hortilux upgrade for $64 and the 19" cooltubes were $49 instead of $59 with the lumateks and havin to pay extra for the detachable cord set sucked but still the best price goin with a 3 yr. warranty..........PEACE.............DHF............

 

[Guest]