Zoo Med Laboratories Plankton Banquet Block Feeders - Giant Size (3 Pack)

These saltwater fish vacation feed blocks are fantastic! They’re very large and can accommodate multiple fish in your tank, so you don’t have to worry about someone coming in or risking your fish’s health while you’re away. Just take one out of the package, pop it in, and you’re done—peace of mind guaranteed. I used them for a week-long trip, and all of my fish and invertebrates were alive and well when I returned. Highly recommend for stress-free vacations!

Worked great! Was gone for 2 weeks had 5 fish and all stayed alive when I got back, and tank never clouded. I had a filter just for info

left for a week and fish ate well and still alive . will buy again

The fish enjoy the food. However it does dissolve quickly for a vacation food and clouds the water

I always drop three of these into the tank for 4 day weekend getaways, my large goldfish almost finish them before we get home