unless yur cleaner wrasse likes brine shrimp or anything else that you feed them.
I've had a bad experience with cleaner wrasses. back in my marine bi orb days we got a cleaner wrasse. that bugger is still alive and kicking, eating everything we put into our display tank which we transfered him into
recently I added a cleaner wrasse to my coral growing tank, he died within a month.
if you are interested in buying a cleaner wrasse, have your lfs feed the tank to see if it eats.
then put a deposit down return a week later and witness it eating again, only then take it home.
good luck on your plumbing. test and retest everything.
When I plumbed my tank in, I was sure everything was a'ok but it turned out the tank overflow connector for the refugium had the slightest leak. Didnt notice till 6 weeks later, had to strip down that whole section and sort it out.
was a full days work, not to mention the extra plumbing I had to do to re-network the piping because the tank was up and running.
running a refugium can really help maintain a balance in your system and will help reduce the amount of water changes needed.
what it doesnt take into account the need to add calcium and other supplements that are found in your salt mixture. These supplments are absorbed in your tank helping to keep its inhabitants (fish/corals/inverts/live rock)
Less water changes also can affect PH.
I'd also recommend that if anyone wants to add a refugium to their setup they should wait a good while until their system has had chance to mature. eight months at least is my personal recommendation, although they can be setup before then, you just wont have a lot of success with it at first (from personal experience, not saying thats gospul)