What's new

Old Nutes

My bottles of nutrients are several years old. Do they go bad, or lose their potency after time? Especially the Cal/Mag, as I've got one plant that's about dead, and looks like it's from a Magnesium problem, and another, different breed that shows the same symptoms but is otherwise still mostly healthy (so far).
 

WelderDan

Well-known member
Veteran
I'm thinking it depends on the nutes. I used a 6 year old bottle of PBP that had been opened with no problems. I imagine some are more stable over time than others. Your mileage may vary.
 
Top