I have a layer of mulm settling on top of the substrate in a small area of my tank. My usual method of cleaning it is to waft my hand about to disturb the mulm as much as possible, then remove it from the water column with a large water change. Been doing this successfully for years. (I am not talking about deep cleaning the substrate just the accumulated crap sitting on top). Now I am not doing water changes this method does not work so well - lots of the mulm settles again before it gets in the filter. Also I would prefer to remove it from the tank rather than add it to the filter. So I was wondering what alternative methods are out there, I can think of two... 1 / battery operated gravel cleaner. (not a siphon operated one as I do not want to remove water from the tank) 2/ turkey baster! Has anyone done the turkey baster method? Any other ideas?