Just came back from the holidays, great growth on my purple hornets 2 new polyps and it grafted onto the rock, this was 9 days on the eheim feeder. I use small pellets and smaller pellets to feed my tank, with the eheim feeders door 1 click open it was about right for my tang and clownfish, 2 clicks was equivalent to about 50 feedings. I would highly recommend not testing over the tank get a peice of paper or tin foil to try things out (I spent about 10 minutes with a turkey baster getting excess food out...facepalm eh?). I didn't like the velcro given the bad reviews, so I just drilled a couple holes in a peice of scrap wood and zip ties minutes before I ran out the door.