not long after putting a pinch into the 4ft tank we were able to finally take a decent count of all the shrimp in there.
Once it plumps up with water the smaller ones come and eat.
They seem to enjoy it, they've had healthy moults since and a few ladies have berried.
The tub is going to last months too! 4-5 pellets do my small tank of 15 for 2 days.