Sooo getting back on topic =)
I'm currently taking most of my sand out. I had a deep sandbed of 4", mostly because I kept jawfish. I am mainly focusing on SPS corals again and this past weekend I decided to vacuum the sandbed a bit and holy crap, the water came out looking like mud.
I decided to go sort of BB. I'll be leaving about 1/2" of sand just to give the critters a bit of sand. I do have a mccosker wrasse so he also came to mind when deciding about leaving some sand.
I tested my vortech at double the speed that I normally keep it and the sand never kicked up and it was some crazy flow.