lighting question

raycopp · 11-14-2005, 11:13 AM

What would be the best way to go? 200 gal. 84x18x30

thank you for your help

**Ninong** · 11-14-2005, 12:15 PM

A lot depends on what you want to keep but if you are planning on keeping SPS and Tridacnid clams in a 30" tall tank, I would go with metal halides -- either 400w or 250w, plus actinic supplementation of some sort.

Does the tank already have a canopy? Are you going to DIY the lighting? If so, you would want at least 3 metal halide lamps but 4 would be better. If you want to go crazy, you could even stick 5 metal halides over a 7' long tank. One advantage to going with 5 of them is that you could go with 3 of one Kelvin and 2 of another (e.g., 3 10,000K and 2 20,000K).

If you decide on a ready-made all-in-one fixture, go for a 6' long fixture with three or four metal halides plus actinic fluorescents, possibly T5 fluorescents. There are several possibilities out there. Check the sponsors and see what they offer under lighting.

raycopp · 11-14-2005, 01:54 PM

Thank you. i will check and see what i can get in a 6ft fixture.

11-14-2005, 11:13 AM	#1
raycopp Just Moved In Join Date: Nov 2005 Location: ny Posts: 33	lighting question What would be the best way to go? 200 gal. 84x18x30 thank you for your help

11-14-2005, 12:15 PM	#2
Ninong Moderator Join Date: Jun 2000 Location: Louisiana Posts: 19,672	A lot depends on what you want to keep but if you are planning on keeping SPS and Tridacnid clams in a 30" tall tank, I would go with metal halides -- either 400w or 250w, plus actinic supplementation of some sort. Does the tank already have a canopy? Are you going to DIY the lighting? If so, you would want at least 3 metal halide lamps but 4 would be better. If you want to go crazy, you could even stick 5 metal halides over a 7' long tank. One advantage to going with 5 of them is that you could go with 3 of one Kelvin and 2 of another (e.g., 3 10,000K and 2 20,000K). If you decide on a ready-made all-in-one fixture, go for a 6' long fixture with three or four metal halides plus actinic fluorescents, possibly T5 fluorescents. There are several possibilities out there. Check the sponsors and see what they offer under lighting. __________________ Ninong

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11-14-2005, 01:54 PM	#3
raycopp Just Moved In Join Date: Nov 2005 Location: ny Posts: 33	Thank you. i will check and see what i can get in a 6ft fixture.

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