[karimwassef]

Maybe the issue is truly the health of the sand...

I keep a thick sand bed but it's a vibrant mass full of worms. That's been a key to successfully keeping my sandbed.

Your remedy works for you. No question. But I keep a sandbed while getting rid of dinos... the difference is likely in the biofauna in the sandbed.

We tried water transfusions and live rock exchanges. Have we ever tried a sand bed transplant? Like a bone-marrow transplant.