How long is the brew good for? Organics Alive Support January 23, 2020 21:51 Use the solution as soon as possible. Best results are when used immediately after brewing. Do not refrigerate or freeze. Related articles What happens If I don't’ Pre-activate? How much will one bag of Amendment cover? How do I pre-activate Mix Kit? What happens if I brew for too long? I have 10,000 acres. Can I use OA? Comments 0 comments Please sign in to leave a comment.