The platies definitely got some, I figure it's mostly veggies anyway so it would probably be good for them too. The snails got most of it, the cories were trying to body bump the snails out if the way though, lol. My pleco got very excited by the spirulina one too
To add, I didn't mix any water with it because I wanted it to be firmer and not break down quickly, it worked out great. It's about the consistency of a rubber bouncy ball, you can slice pieces off of it which is handy to spread it around. I used an ice cube tray with the silicone bottoms to set it.
I am going to try this. It looks like a feeding frenzy. I love the 2nd picture with the little magenta behind the pleco's fin scurry over to get some before it is all gone. Thanks for the answers to where to buy it and how to make it. Alison