I have 4 guppies (3 female, 1 male) in a 5.5 gallon tank. Usually I feed them Top Fin Tropical Flakes, but I bought some Spirulina, Algae, & Veggie Wafers (by Zeigler) on amazon and some Omega One Veggie Rounds at the LFS (I didn't realize they were basically the same thing till later) to try and make my mystery snail eat, as he is sickly (in a separate tank now so I don't have an ammonia spike). Anyway, the snail is clearly a goner but I have all this food now. I dropped 1/4 of a veggie round into the guppy tank just to see if they would eat it, and they went BALLISTIC. It must be like catnip for fish! They went so ballistic, however, that the two bigger females started fighting over it and wouldn't let the others near it. I took it out before it got too soggy so it wouldn't pollute the tank, but after I came home from work that day the main two hogs were super constipated. My question is this: clearly, they love this stuff and it would make a good treat maybe once a week. But how much of a wafer should I put in the tank? And how long should I leave it in the water? I know I should break it into a few different pieces from now on to prevent fighting. The Omega rounds are about the size of a dime, Zeigler wafers are about the size of a nickel. In pics below, the Omega is on the left and Zeigler is on the right.