is a deep sand bed, typically 4 - 6 inches deep. This would raise the bottom of your tank up and give you more options for lighting becuase you would be within normal light penetration range. (i.e. I have a 26" deep tank that I raise 4 inches with a dsb
to ease the light requirements of my bottom dwellers) Also keep in mind that you will have options on where to place other light demanding species (non bottom dwelling) through live rock placement. You can always take a high light demanding coral and stick it high up on the rock (if it is a top / middle dwelling coral) to help with lighting requirements. To keep your MH
cool make sure and get something with a remote ballast that you can keep away from the tank (mount under the stand, etc) or if you get a MH
canopy make sure it has ample fans in the hood and a remote ballast. Also the addition of a sump with a fan on it will aid in water cooling. If you getting large temp fluxtuation over the day/night you can put your sump fan on a timer to shut off with your lights to try to stabalize it. Also remember that most MH
lamps should be about 6" off the water surface. This will aid in keeping the water cool. Okay that was long and windey. I'll stop there for now.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.