Hi, I have recently purchased a Fluval Flex 36 litre tank to have Red Cherry Shrimps in. When I bought it the sales guy said that the filters on this particular tank would be too big for the shrimps to pass through, particularly if the shrimps would breed, and the eggs could get hoovered up. They recommended inserting a folded up piece of sponge into the filter intake to stop anything small going through, which I have done (shown in the pictures). My only concern is this going to block the filters too much? Any advice would be brilliant thanks!
