You guys sure all telling him to buy a lot of stuff he really doesn't need entirely.
His lights are fine, they have nothing to do with his algae problems.
Do at least one water change per week of 15-20% and manually remove all the algae that you can.
Set your skimmer to skim as dry as possible. It will take at least 2 days for it to form a good foam head and to skim efficiently. Don't mess with it for at least those 2-3 days.
The hippo tang needs a much bigger tank. Some would say 125g other's will say more. Also the foxface will also get too big for that tank also. They need at least a 4'x18" tank(75g).
Do a lights out for 3 days as suggested after doing a water change, and removing all the algae manually. This will help to kill off the cyano and algae problems you are having.
Ask the LFS you go to, to get your water from what their TDS (total dissolved solvent) is of their RO/DI water, and if possible ask to see the meter. I had a LFS tell me once it was zero and I asked to see the TDS meter reading and they got all huffy. I told them if they wanted me to continue buying their water I'd have to see the meter. When they asked why I told them I was having a severe algae problem, which I was. In my case they said to bring in a water sample to test to see if I had nitrates or phosphates in my tank before they'd let me see the TDS meter. I thought that's only fair, but I already knew I had 0 of both because I test myself. Brought it back to prove to them I didn't have any NO3 or PO4 in my tank and they reluctantly told me that the RO membrane hadn't been changed in a year and it was reading over 20 TDS. Needless to say I didn't come back to that store and went home and broke down and bought a RO/DI unit.
You can't believe more than half the stuff a LFS tells you, my case in point and yours with your Hippo Tang, and Foxface.
If you do all the things above I mentioned and are still having problems then I'd recommend you buying a dual reactor to fill with GFO and carbon.
Your lights are fine right now. In fact watts per gallon don't really matter it's the PAR output of your bulbs that matters, but since you have 5x54 right now, that should enable you to keep all kinds of LPS and some low light SPS if placed near the top of the tank. You said you had 2 blues, one white, and one purple. Any idea on what kind they are? There is a great thread by Grim Reaper in the Lighting and equipment forum that gives the specific PAR output of almost all major bulb companies, or at least the ones that are worth purchasing.
Do all the things I mentioned and that should alleviate your problems that you are having.