Lighting coverage for 6ft tank

[merfish101]

Hi all. I have a standard 180g tank. 6*2*2. I'm currently running (2) retro t5s in the front, (3) Mars Aquas in the middle and (2) retro t5s in the back. I am removing the MAs and I will be adding some AI Hydra 32s in the middle. My goal is to have a SPS dominate tank.
QUESTION: How many 32s should I run in the middle? I ordered 4, will that be fine or should I order a 5th?
Any feedback would be welcomed.

 

[jda]

You will need more than three, so four is a good start. Give it a shot and see if you need the fifth. The T5s will help a lot, so you might be OK. You can always add a fifth later.

 

[merfish101]

Thanks. Gonna set the four up and see how that works out. If needed, I'll get a fifth. Thanks again.