Originally Posted by
discuspaul
Just hover your vacuum tool 3/4" - 1" over the sand and you'll collect any & all debris sitting on top of the sand. If some sand also gets partly siphoned up into the vacuum tube while you're vacuuming, don't worry about it - #20 PFS will simply rise about an inch or so up into the tube, & because of its weight & density, it will then tumble right back down & fall out of the vacuum - it won't get siphoned out.
If you do a wc every day or every 2nd day, vacuum any wastes at the same time (i.e. just before you do the wc) - it only takes a couple of minutes, and your sand will be nice & clean all the time.