somthing thats going to suprise you is how big the trochus snails get over time. But yeah CUC can make a big long term differance by not having the waste just sit their or going into the filter.Think so? It would be nice to have the CUC not only make the tank cleaner, but eat away uneaten food and detritus to therefore reduce nutrients and make the coral thrive too. Almost seems too good to be true since nothing previously has really ever worked the way I thought it would lol.