It doesn't surprise me he's sitting there. My GN Pleco will hang on the back of his big rock that sits just in front of a secondary HOB
filter. He really likes it when some of the water evaporates and he gets more current on him.
Yeah....the wait. if I was cruel I'd put him in a more open tank like the one my betta is in, but I'm not going to chance that. My snowball was pretty spendy.