I have a 2.5 gal copepod raise tank that I keep stocked with live rock. Every month I exchange rocks from my chamber 1. The pipe fish is the only one who can go in there. Also I catch a bunch with a turkey blaster and squirt them in. I just started with 3 bottles of copepods in my tank then another 2 to raise. Works out great! All my fish love them! I've also trained my mandarin to eat Brine shrimp so that helped me a ton..