what wattage bulb?

I'm trying to figure out what to get for a 135g that is 24" deep. I've read that 175 W will do well for that depth but anything deeper needs to be at least 250. Can I get away with 175? The ultimate goal here is to keep a clam. I'm not really interested in SPS. I'm also keeping in mind that there is a 2" sand bed so even though the tank is 24"D it has a 2" buffer. Does this look good? It's from one of the sponsors, ReefGeek.

http://www.reefgeek.com/lighting/Metal_Halide/Hamilton_Technology/Retrofit_Kits_(MH_Only)/72_inch__Retrofit_w!_3xMH_Only_by_Hamilton_Technology

 

Go with dual 250's or 400's. Dont cut corners on the lights. I learned when i bought a PC fixture for lighting of reef. cost 400 dollars to replace.

 

I have 4 175s and 8 110w VHO Actinics on My 180gal. Same depth. Clam doing great.

 

Thanks guys. Dador, you have a lot of VHO to supplement your clam. I was just planning on two NO actinics and 3 MH bulbs. Sounds like I should probably go with 250,darn. Anyone else who keeps clams under 175 feel free to chime in.

 

400w mh with t5 blue

 

There are more choices and better bulbs with 250 W fixtures than with the 175's
You know what you need to do

Jim