You like that background
haha
Well the canister didn't really want to sink on its own so I decided to bury it in the substrate (right by the oto eating the other wafer and he wouldn't move no matter how close I got haha). I think that the holes might be larger enough, here is a picture of the canister and there is even a small snail in the picture so you can see how tiny they really are.
I don't feel like cutting up a potato tonight so I will be lazy and just try my algae wafer inside the canister for tonight and see how it does.
Tab- I was going to give them some bloodworms tonight too but I think they got their treat for today with the wafer haha
Anyway... here is the picture and the snail is on the left side.