02-28-2013, 08:17 AM
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I've been wondering this myself lately. . .I've had the same bottle for a bit over a year now, and my plants are still growing, so it still seems to be working well enough. It seems like the kind of thing that you'd want to replace every year, regardless, but there isn't an expiration date, so. . .*shrugs* I've also kept mine in the 'fridge for no other reason than thats what the bottle told me to do, lol. Like Byron said, there must have been a reason for them to have originally recommended it. . .
Anyway, I've sent a message to the company to see what their recommendation is, I'll let you know when I hear back.
Last edited by Chesh; 02-28-2013 at 08:24 AM..