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The plantex looks a little funny, color seems weird, may or may not be a problem. Tough to say, but in general if they have stayed dry they should be fine.
 

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hi.
i have those dry ferts for about 3 years. do you think i can still use them ?
Hi cengherbogdan,

If you are concerned about the viability they should be fine. I'm not a fan of the Aquariumfertilizer.com Macro/Micro mix because it has no phosphate. The CSM+B looks fine; the iron in the mix will darken over time from oxidation but still works.
 

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Discussion Starter · #4 ·
Hi cengherbogdan,

If you are concerned about the viability they should be fine. I'm not a fan of the Aquariumfertilizer.com Macro/Micro mix because it has no phosphate. The CSM+B looks fine; the iron in the mix will darken over time from oxidation but still works.
thank you so much. any way i want to use only KNO3,KH2NO4 and CSM+B. but i showed in the pictures what i have
 

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They should be perfectly ok. I found some boxed up from a move that were nearly five years old. I have had no problems using them.
 
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