Halide distance to water ?

[gerrygab]

I am planning to ad dual 250's to my 90 gallon tank, working with my existing canopy the furthest i can mount my bulbs from the water is 5-6". Is that to close? even with cooling fans.

[Aquattro]

That's fine. Just don't splash them or rub your arm across them!!

[rickjames]

One thing to know too is the closer they are to the water the more focused the light will be.

[Corey]

rub your arm across them!!

OUCH!!!

[ruck'n'reefer]

Corey... he said "don't" rub your arm across them!!

[Ryan]

Ya man bad idea I got scars from my 175 on my elbows not cool. 5-6 inches should be good. A good reflector will improve your lighting also.

[megatron_55]

dang . . . do they really get that hot??

[kuatto]

The 250 10k will get hot enough to burn wood if too close(lesson learned )and if you think the bulbs get hot,just try picking up a magnetic ballast thats been on for a couple of hours with your bare hands (almost removed the finger prints on 4 fingers)

[Willow]

Originally Posted by kuatto

The 250 10k will get hot enough to burn wood if too close(lesson learned )and if you think the bulbs get hot,just try picking up a magnetic ballast thats been on for a couple of hours with your bare hands (almost removed the finger prints on 4 fingers)

i think thats why they put them in giant heat sink boxes.