Film (grayish/whitish looking) on the suction cups etc. is BIOFILM, good stuff! A good sign! Its easy to clean off of places you don't want but if you're fishless cycing, why not just leave it! WD
Well, I haven't updated in a bit but just thought I'd let you guys know that the tank is cycled. I've done the 90% water change and popped in the fish. There are two yellow lab cichlids and 4 red peacocks about an inch long.