i want to get a few cory cats for my 20 gallon, it will have zebra danios and about 15 fancy guppies. I also have a chinese algae eater in there, but im giving him to a friend. Once i get all of my guppies at the end of june i will buy about 5-6 cory cats. my petsmart had tons of different kinds for sale there. so for my question do they do a good job on cleaning the gravel and cleaning up bits of food and algae? i want to get a bristlenose pleco but i thought a school of cories would look a lot cooler.
