dino's

[christyf5]

My final kick at the cat when I had this issue was removal of the sandbed, powerwashing the rock and pretty much a complete start over. You may have to cook the rocks if they're releasing the nutrients that are fueling the dinos. For me it was the sandbed (even though it was new it had tons of detritus build up on it that looked like grey dust). After the sandbed removal and rock powerwash I was good to go and haven't had a problem since (I had a horrible cycle with caulerpa though, dinos would subside, caulerpa would grow, I'd yard out the caulerpa and then the dinos would flourish on whatever the caulerpa released during the pruning).

Sorry you're still having a time with this, dinos have sent many a reefer running screaming from the hobby.