Liquid Nutrient shelf life

[DrFever]

Whats your thoughts, ???? from being one of them bigger plant count growers i needed to purchase larger quantities of nutrients , it was way more cost efficient.
But is there or could there be a actual shelf life on chemical nutrients ??
I am starting to think so Even tho the nutes will still work how long till problems can and will arise.
Could some of our plant issues be from out of date liquid nutrients ????
I have grown same strain for well over 3 - 4 years so got her dialed pretty good
but my last few grows i started to see some minor issues with my girls, and started to pin point what i could of done or what is going on.
The Answer was my nutrients i believe being that it was like almost 2 years old product still kept in a good storage place with colder temps etc.

This present grow i decided to purchase all new same brand nutes same feeding schedule, lighting all dialed in and what a huge difference in lust and growth
So my thoughts is YES possible ammonia evaporation from our bottles or just becoming stagnet after time i have become a firm believer that even tho nutes has no expiry date it is a chemical and things will change in it

 

[BackWoodsDrifter]

I dont buy in bulk cause it tips me canoe and kills way to many fish so I buy small but will say I am usin stuff 5 years old now and seems workin fine by me.

BWD

 

[maineharvest]

The nutes I use have an expiration date on the bottle. I've had to throw them out once myself.