Here is the thing...While growth and breeding seems slow in the beginning...RCS breed at a very rapid rate...Especially using the condition suggested...This can lead to severe water quality issues if you are not able to move the shrimp as fast as you think you can...Which can lead to total failure... While I don't think the food is going to make them grow any faster...I do think quite frankly you are not going to want them to. The key to keeping shrimp is patience and water quality.