I've tried some of that food - have a few packets right now
My fish love them and I don't mind that they come out in 'blobs'
as my fish have all learnt to eat from the bottom anyway. The cories realy appreciate it as well and the others will rush to the top and eat it as it falls
. It dissapears from the substrate within a minute and the fact that it (the brine shrimp one) is bright pink means I can tell if there are any left-overs (and there never have been so far) so I can syphon them up easily.