I an getting ready for my second set of chicks and I have a question about Corid. I have never used it before and am wondering if there is a difference between the 9.6% solution and the 20% soluble powder. Is one more convenient or stable or otherwise preferred? Last year I fed medicated starter but this year I have decided to go with non-medicated starter and want to have some Corid on hand just in case. Thank you in avance!