I used to rinse religiously using a BBS net. However, since my system had pale corals at the time I started to just use the frozen food 'as is' to add a bit more nutrient load. In my case, the added micro particles and other products helped to create better coral coloration and growth. In fact, I've taken to grinding some of the dry flake food between my fingers in the tank every time I feed to create a very fine paste which has worked wonders for all the corals.
Here comes the 'caveat' that no two systems are alike. Not all tanks can take this kind of input, but since I vigorously remove detritus weekly from the SB and LR (and anywhere else) with the WC I have had no measurable nitrate or phosphate in nearly three years of testing (Salifert). Algae is also very minimal and I use this bio-indicator to warn me should the nutrients ever become excessive. There is a lot more to a healthy substrate than is generally realized or even completely understood, but that's another topic for another day.
Here comes the 'caveat' that no two systems are alike. Not all tanks can take this kind of input, but since I vigorously remove detritus weekly from the SB and LR (and anywhere else) with the WC I have had no measurable nitrate or phosphate in nearly three years of testing (Salifert). Algae is also very minimal and I use this bio-indicator to warn me should the nutrients ever become excessive. There is a lot more to a healthy substrate than is generally realized or even completely understood, but that's another topic for another day.