Originally Posted by onefish2fish
IMO thats the issue, they collect debris, get stirred and release it, spiking the nutrients of the tank. i just like to have 4'' - 6'' of sand myself. even my refuge gets a 4-6 inch bed
Now I totally understand your Fuge having a DSB, that one makes sense. But, in my experience, one should not stir up a sand bed, at all. especially one with a DSB, if its a mature system, stiring that up will release toxic gas into the tank, and then you have all kinds of problems.