With the addition of a the new Xenia to my tank 3 weeks ago that seems to have almost grown 50%. I have noticed a decrease in the marine snow(plankton?) that used to rise from the sand bed just after the main lights went down. Now the tank is virtually crystal clear all the time. I am looking to supplement the plankton levels in the tank with live feedings that would help all the corals I have. I have seen one product call reef bugs are there any others out there and does anyone have experience with them. Also I have seen my frog spawn expel what appears to be small shrimp shells(Pods of some type?), So any suggestions there on what to continue feeding it since the tang and other fish actively hunts those also and the tank population of pod s is dropping fast