Vacuuming vs live crushed coral

[jassz]

From what I've been told, you either have to vaccum religiously, or not at all. I am nervous to do not at all. I have a predator tank, so quite a load.

[whatcaneyedo]

I keep a volitan lionfish and snowflake moray in my 120gal with only a 1" thick sugar sand bed. I used to use crushed coral but I really didnt like the look of it. The large particle size tends to trap and hold a lot of detritus. But if you plan on keeping it and dont want the hassle of siphoning each week you could remove some of it so that you only have a thin <1" layer. Then just give it a stir once a week and let your filtration pull the gunk out.

[Myka]

You have to vacuum crushed coral otherwise too much detritus gets trapped and it will increase nitrates substantially. If it were sand, then you shouldn't vacuum, you just surface skim with a siphon hose.