Lighting question

Eashton123 · 09/11/2006, 12:44 PM

Are two 175 Watt Halid lights enough light for a 75 gallon tank to have coral?

15k
and a
20k

dee67 · 09/11/2006, 12:51 PM

My understanding is for a reef tank you need 6-8 watts per gallon. You have between 4.5 and 5 watts/gl. Making it difficult to think about even low light stuff.

Randall_James · 09/11/2006, 01:01 PM

I ran 2X175 (10K and 10K+ Bluelines) MH halide on my 75 and it worked great... I did supplement the system with two 48" T5 TruActinics further down the road for the "twilight" effect before and after lights come on and go off.

This tank had a number of SPS corals (mid tank and up) that did great. "Stout" here at RC now has that tank and so you might look him up for an opinion

09/11/2006, 12:44 PM	#1
Eashton123 Registered Member Join Date: Aug 2006 Location: Indiana Posts: 129	Lighting question Are two 175 Watt Halid lights enough light for a 75 gallon tank to have coral? 15k and a 20k

09/11/2006, 01:01 PM	#3
Randall_James Premium Member Join Date: Feb 2005 Posts: 6,727	I ran 2X175 (10K and 10K+ Bluelines) MH halide on my 75 and it worked great... I did supplement the system with two 48" T5 TruActinics further down the road for the "twilight" effect before and after lights come on and go off. This tank had a number of SPS corals (mid tank and up) that did great. "Stout" here at RC now has that tank and so you might look him up for an opinion __________________ "It's a dog eat dog world and I feel like I am wearing milkbone underwear"

09/11/2006, 12:51 PM	#2
dee67 Registered Member Join Date: Jan 2005 Location: Northern Wisconsin Posts: 25	My understanding is for a reef tank you need 6-8 watts per gallon. You have between 4.5 and 5 watts/gl. Making it difficult to think about even low light stuff.