I can tell you I have a biocube 14g with a good bit of corals, 3 diffrent clowns and a hi fin goby. Like you my phosphates are little higher than one would like got gha also. I use a homemade media basket in the back with filter floss on top, chemipure elite in the middle and phosguard on bottom ( trying to control phos). I do weekly water changes about 25 to 30 percent. Besides my pistol shrimp kicking stuff up, my water is also crystal clear. I think the chemipure elite and filter floss are to thank.
I was thinking that the refugium in the back of the tank would really help with that. This is my first tank and started it in March. Ever since then, I have been wanting a refugium and after this thread I think I have finally made up my mind to do it.
The problem is that this is only a 32g and with that small of a tank, I still have a total of around $2,300 invested since March. Everyone was right this is an expensive hobby! ;Greedy