Micki, I PMed you an article about Cyano but most likely the way to fix it in your case would be to get nutrients out of the water. You can add more coral, a refugium, or feed less.
NexDog, I would love to have a 180, that extra depth would be great and I could aquascape so much better, I definitely like the depth of the 180 rather than the height of the 150.
The refugium has water pumped to it from my sump a drain is drilled a little higher and used as a gravity return from my refugium to my sump, very simple.
ChAoTiCrEeFeR4U, I think that is actually my favorite coral in the tank, I got him when he was a wee boy and have raised him since.
FastUno, it's about 150lbs of Live Aragonite Sand, All was bought live because I didn't want to have to wait on the sand.
The rocks were live but had no coralline. I use a coralline stimulator which a lot of people don't believe in but has obviously worked for me.
I think you need a mixture of both to be successful the porous rock should have things in it to clean I eventually. The rocks on the link are alright, you will just have to wait longer for them to catch up to whatever bioload you put in go slower also you lose selection of shapes.
I think the amount of rock that I have helps make my tank more successful and breaks down the detritus.