Members,
My personal opinion
Sand shifters are goodrich if the sand bed is not a DSB.
My sand bed is least then 1 inch. The sand shifter keeps my sand bed loose. My sand was forming to lump and chunks initially.
I have have quite a mixture of cleaning crew that comprise of Dollar sand, dwarf hermit crab, tiger tail, snail, sea hares, albalone etc,etc...
thanks to Henry of ML and no thanks as it is a hole in the pocket too.
rdgs