I've got a teeny (hockey puck-sized) jar with green water, about five fairy shrimp and two bloodworms. It sits next to a light bulb to keep the green on. I'd like to filter it lightly, but can't think of anything small enough. I could do a sponge filter if I could get small enough bubbles. Is anything already on the market that does this or am I going to try modifying an existing airstone?
Or would a sprig of java moss be able to handle things well enough?
Or would a sprig of java moss be able to handle things well enough?
