Shield: 15 grams. Stimulates the immune system. Shield provides beta glucans which strongly stimulate the immune system. Complemented by specific amino acids, vitamins, and rare trace elements like selenium.
Posted by Jeff Lidberg on Sep 20th 2016
Must have in every powder mixture....
Posted by R. Scott Page on Feb 12th 2016
Betta Glucans are a bit mysterious to me, but they have a great reputation for promoting the immune system in shrimp - which don't have a strong immune system in the best of times. I include the Shield as an ingredient in the same quantity as Spirulina because I believe it eliminates mysterious deaths in my tanks.