This picture says it all. I haven't fed the corals (directly) yet. I gave the fish some Rod's Food which also has coral food in it. Look at the difference between the tubastrea in good flow Vs. the tubastrea in poor flow. Additionally, look at the carnation. One of them is doing awesome and one that is only inches away is all closed up. These are clones.....same parent colony. The only difference is flow. I was considering adding a wavemaker. This picture basically settles it for me. BTW....the Dendro in front is interesting. It had fallen behind rocks at the store. Obviously, it wasn't fed as a result. It had 2 heads. One was dead. The other was 95% dead. I decided to try and rescue it and brought it home. I thought I had failed because I couldn't get it to open up.....EVER! I was wrong. They apparently have some sort of survival mechanism. It "decided" it was likely going to die so it spent 100% of it's energy making babies....more than 10 of them. Once they started growing, the "mother" started eating finally (after a month).