My shrimps absolutely love this stuff. I added it to my caridina tank and my neocardina tank. The shrimps are thriving and every time I add it the baby shrimps try and catch the little particles. It's so cute.
I have heard great things about this line of products. Currently I am using Freya's to cycle a tank and adding 1x per week. Looking forward to using this all through the life of the tank! Came in quickly and as advertised!