The best part of this forum? I can ask what will probably be a stupid question, and I won't get flogged for it!!
Is there a shelf life for dry CYA?
I haven't opened my pool yet, and even if I have 0 and need to bring it up to 70ppm, it would take 15lbs. I can get a 40lb bucket online for about $57 out the door. Less that $2.50/lb is by far the cheapest I have seen so far. Since the likelihood of going through 40lb in one season is almost zero, and I'm more likely to spread it out over three seasons, is there any reason I can't buy the super-giant bucket at the cheapest unit price, and leave what I don't use on the shelf for the next 3 years?