[cengherbogdan]

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

 

[nilocg]

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.

 

[Seattle_Aquarist]

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.

 

[cengherbogdan]

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

 

[Zorfox]

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.