1) Do cories eat algae that has been cleaned from the glass and rests on gravel?
2) My tank stinks
; I have a 13g with: 7 neons, 2 cardinals, 2 guppies, 3 platies, 2 cories and 1 zebra danio that likes to terrorize the other fish 
it's ok to critisize me, i've been critisized lots of times..
Although I'd like an answer
to question 1 & 2 (how to cure tank stinkness)
2) My tank stinks

it's ok to critisize me, i've been critisized lots of times..
Although I'd like an answer