Filter full of catfish!

I was cleaning tank out on sunday and decided to give the canister filter a "quick" clean out. When I opened it up then was about 200 baby Bn's. Some of them were up to 4cm long but majority were only about 1cm. My cats have been breeding like crazy for the last few months and I just my discus had been taking the odd one or two. I was freaking out, it took me over 2hours to get the all out. I just don't understand how they could survive in there, especially the larger ones. It has taken them a few days to adjust to the lights, but there still a bit jumpy, hopefully they will calm down.

How Cool 8-) 8-) I thought my Koulie Loach was clever making it into the water at the bottom of my trickle filter.. that many BN's is way better :D just shows how adaptable fishies can be