I agree with Jim,we are running a bubble King and a Vertex and we only target feed reef droids once a week.1/8 teaspoon is probably what the wife uses for our tank which is close to 5x the size of yours. We don't use it for the SPS tho. It is more intended for LPS. She uses it mainly for Acans. When we feed the return pumps are off for at least an hour. I also agree that socks are potential nitrate factories. I swear by them but preach it is very important to change them often. We change ours every other day. If you are waiting for it to clog before changeing your defeating the purpose of the sock. Filter socks mainly are large particular filter system. They do a great job but must be changed often and be replaced often. We probably have close to 20 socks ! If your waiting for it to clog your allowing the return flow to pound excesses food into tiny particles in the sock that get broke down into No3's . High concentrated foods like droids,extacy and frenzy are great for your coral but also need to be used in conjunction with a strong filtration plan!