You should also look at the quality of your food. Not sure how good the San Fran brand is, however, from what I can tell, it's low quality. Most of these manufacturers buy the scraps and then mix them all together(i.e. Ocean Nutrition). These low quality foods introduce a lot phosphate into yuor system, even if rinsed as you can read from the test another member performed. Stick with Hikari & Gamma from the frozen section. And if you have the time, make a homemade frozen mush or use whole squid & cokkle.