It’s been a year, please help ID

[BigRed78]

I had a massive algae outbreak in my tank bigger than that due to a ro membrane issue. I tried blue vet flux rx that the guy at my lfs told me to use. 2 weeks later not a trace of algae and no harm to anything in the tank. It did kill my chatoe thoug. Would highly recommend it.

 

[Cstar_BC]

Are you able to take individual rocks out .
I had good success bringing it out , spraying with Hydrogen Peroxiding Let it sit for 5min and giving it a scrub