Thx for all the comments.
The cooltube are working ok. they took the temp down 4- 5 degrees, but they are still warm, can't touch the glass yet. On the Item info it said that plants can touch the reflector glass, well I'm not sure of that. But I am gonna do some testing and figure out a way to get lamp temp around 25 degree so the plants can touch the glass. Any suggestion and I might try it. Anyways cooltube is better then most of the reflectors on marked and I can recommend it.
Peace
