How would you light up a sps dominant system?

Wheelman76 · #1 10-25-2015, 07:14 PM

Quote:

Originally Posted by MitchM

6 inches of space between the fixtures and no canopy should provide sufficient air space for cooling. There is very little hot air coming out of the end of the fixture.

I think that the plastic reflectors were a design error and the ballasts are not heavy duty enough.

The overheating issue does not explain failures in both fixtures.

Yeah I agree that 6" should be enough space , were both fixtures pointing the same direction, or were they blowing into each other? I guess with 6" space in between you must have had a little overhang on both ends of the tank ?

MitchM · #2 10-25-2015, 07:43 PM

The fixtures themselves are 46" and with a bit of an overhang the space was about 5 1/2".
Both fixtures were pointing the same direction, the exhaust outlet of one was blowing into the side of the other, but with the intake fans on the top and sagging acrylic lens they come with, there was lots of room for fresh air to enter and hot air to excape.
Since I've replaced the initial ballasts, I haven't had any problems which makes me think that the original ballasts were the problem. (in addition to the plastic LED reflectors)