MH lighting questions

[ggerhart]

I have a 48Lx24wx12h tank with a 48in light fixture with two 150w metal halides built in. how high should the fixture be above the water level? Currently have it at 15inches. Look for some help. Thanks

 

[melypr1985]

I think it depends on what your planning on keeping, or what your already have in the tank. Let's get some more eyes on this one....

[HASHTAG]#reefsquad[/HASHTAG]

 

[Humblefish]

I run mine 9-10" over the surface of the water.

 

[Sabellafella]

I have a 48Lx24wx12h tank with a 48in light fixture with two 150w metal halides built in. how high should the fixture be above the water level? Currently have it at 15inches. Look for some help. Thanks

Keep them 30-45 inches up from the sand bed. Now lets see, if it had to be me, you have 150s on a 12 inch tank? I would go around 30 inches up from the bottom of the tank should be perfect. So 15 inches above the tank sounds about right

 

[TUSI]

That's about right.

 

[Humblefish]

That's about right.

+1 My tank is 24" deep, so 9-10" above the surface of the water would be 33-34" from the sand bed.

 

[BoneXriffic]

Mines 24 deep and the 250s are 6" up for me....seems like i nailed this one accidentally

 

[hybridazn]

I think you should be OK at 15". With 150w halides you could possibly lower it to around 12" and still be ok with a shallow tank

 

[Ewilson]

Ran mine at 10" off the water