I was pretty chuffed with the free sample in PFK(a big boost for a fist time reader). I wasn't so sure my Corydoras or any of my fish would eat it, but I remembered the Catfish pellets I give them I think has algae in, so I just thought "Well, it's free, it's worth a try.".
The Corydoras loved them, I put in a whole one which was far too big for three but the Corydoras just kept muching at it with all the Tetras swarming around them, I imagine the snails had a go at them too. By morning it was gone(and I put it in about 10 at night).
It seems good, I'm taking my Corydoras off the pellets and just giving broken up Hikari Algae Wafers for a while to see if there's any difference. I might consider getting a proper pack for some variety.
What I'm trying to say is, in my field of knowledge, I see that you have some Guppys and Neons. They should enjoy it(not sure if my Tetras did eat it but they eat anything the Corydoras enjoy and were crowded around it so I have a feeling that might have.)