I've never seen a royal gramma bully anything. The ones I've seen just stick to themselves pretty much ;d
I don't think that will be much of an issue. But if it is, I'll throw a big ol rock I have in there. I can throw it away in case I have to medicate.
Anyways, which part of the sump would be best to throw my HOB
filter sponge into?
There's water in section - heater, filter sock
fuge section - sand, macroalgae
return section - water pump, and top off water
And how long to leave it in there to seed enough bacteria to stop my 10g quarantine from cycling?