Clown loaches are best in groups and your tank is not big enough for them. I'm afraid you'll have to pick them out by hand. Good luck, they breed like there is no tomorrow - leave them for a few days and you'll have hundreds!
Oh I hope so, I've found a couple in my 10 gal tank and started moving them into the 30 gal.... breed lil snails breed.. and in a couple of weeks I'll the puffers...feed lil puffers feed......