Lighting fixture height without lens

[MarineTeng]

lighting height
i want to take the acryilic guard off of my light, it's a 4 x 65 watt pc thingy and it gets a lot of creep, what would be a good height off of the water so the bulbs and ballasts wouldn't get damaged?

 

[liveforphysics]

Well, thats an impossible to answer question without adquate data, which once you have, you will know your own answer.

However, the height above the water plays a huge effect on the quanity of light that reaches your tank. Also, those acrilic chunks really protect the internals of the light from shorting on salt creep.

 

[MarineTeng]

ya, i was worried about that, maybe i should actually clean it...

 

[Pauls]

Mine gets pretty crusty to, ive been wondering if the coralife saltcreep elimenator would work to keep it a little more clean. I have to clean mine every couple of days.