is my lighting causing this?

[kevin_e]

So how big are these things? I don't see anything even remotely like that pic ...

Small. About the size of sesame seed. You'll find them underneath the monti, most likely.

 

[MarlinHooker]

needed an insitu solution as I can remove my rockwork ...

my LFS was very confident it would work as it kills parasites ... and it did ... montis coming back nicely ...