I have a 40 breeder.
I used two jebao rw 8's they are on the 2 setting and work well, I have mostly sps.
I purchased a sb 32 pro timer and am happy with it, enough power for a 40 to smoke sps in a tank that shallow, I like the color of it too.
Used egg crate for a top.
I have too much rock I think and plan on removing some to the sump one of these days.
I have a 50 lowboy frag tank and the 40 plumbed into a 125 sump and use the octopus 110 skimmer and it works great.
Also have a algae scrubber running in the sump.