Hi all. I just ordered a couple of packs of Gro-gel for new hatchlings. I got the 7 gram pouches which are said to be good for 100 chicks. Well I only have ever hatched under a dozen eggs at a time. So if each gram is good for about 14 chicks, what do i do if I hatch only a couple? Do I start with a half of a gram? I have gram size measuring spoons already for some bird vitamins I got in a raffle that I never use. Do I mix more and then keep it in fridge til I have more chicks? Will it keep?