Ok I read the part when you sed you DON'T HAVE A SAND BED

I was wondering when you started your poop catcher (refuge) back up do you still have sand in that? And why are you running a fuge w/ a BB?
I know when you go from a DSB to a BB phosphates and bacteria take time to equal out.
Something to do with the amount of bacteria in the rocks that now will die off because it has less phosphates to deal with because you have no sandbed.
The rocks will leach out the bacteria die off and algie will feed off that. You should siphon out as much s possible and keep up with manual removal and frequent water changes untill things level out.