That is a nice one, you don't see them that often with the whole bowl.....I have one that is about 12-14'' across, I have never fed it directly.....In the five years I have had it, it has grown about 3-4x the original size.....You should have good luck with it, I have found that a good amount of intermittent flow ( med/ high) really helps the polyps come out.....The polyps one mine extend about an 1 1/2'' with that kinda flow