New to reef keeping.. Lighting advice?

Well first let me suggest going with a 40 breeder tank, good dimensions for aquascaping, and will most likely be on sale soon for $40 at Petco, the last couple years they usually have run the $1 gallon sale in January.

As far as 4 vs 6 either will support quite a bit of corals, if you think you may want to keep alot of SPS and LPS corals I would say go with the 6 bulb, either fixture would allow you to keep some but 6 bulb will allow you to place them at deeper depths and therefore allowing more of them. I'm not sure if AquaticLife's have individual reflectors or just a big one piece, if its a one piece and its the fixture you're set on buying that would also have me leaning toward 6 over 4.

I personally would go with a 6 bulb, it opens your range for corals.

Sent from my Droid using MonsterAquariaNetwork App

+1 vote for Moar Light. Chances are much reduced that you will gnash your teeth and wish you had less/lower level of light, vs the alternative.

I use a 4 bulb over my 20g long. It's plenty of light for my softies and LPS. But if u go for a 40g breeder, would at least use a 6 bulb for more coverage.
I wouldn't worry bout too much light. Hav my light hanging above tank. Works well cause can adjust the intensity of light by just raising or lowering the fixture above tank. I screwed shelf standards to wall, and light hang from brackets off the standards. So just hav to unhook the brackets and move up or down to another slot in standard. You could also just use chain and adjust height with the links. Just a couple ideas for mounting options to keep in mind.

Sent from my LG-VM696 using MonsterAquariaNetwork App

Here's a pic in case interested in light setup

Sent from my LG-VM696 using MonsterAquariaNetwork App

My light is also suspended from the ceiling.
The lights are currently off for the evening though.

Reef tanks/corals r no doubt addicting!!!
^ Nice! I've had numerous lighting setups on reefs in past. I think suspending your lighting, b T5 or MH, best way to go :thumbup:

Sent from my LG-VM696 using MonsterAquariaNetwork App

40B for sure and I say go with the 6 bulbs. I think you can do SPS with 4 but 6 allows you to add in some different bulbe like a fiji and would be better - I have seen amazing reefs under an ati sunpower - jmo

I personally am putting the new Maxspect razor led light over my 40B but it hasn't arrived yet for me to give you feedback.

Let's see that build thread (I should start mine too)