Old.alk and.cal mixes?! Can i use?

[monkeyCmonkeyDo]

Guessing the answer is pour it out and make fresh new stuff but out of curiosity how long will this stuff stay? In liquid mixed form?
Is their a way to tell if its alk or cal in the blue lid container? Ty. Probably 1-3yrs old.
D

 

[MaxTremors]

I don’t know, I recently found a couple jugs of calc and alk that are definitely over 10 years old (in cabinet of old stand in my garage). They were a little dusty, and when I opened them they didn’t look bad, but I just didn’t want to risk it, so down the drain they went (which got me wondering if there’s a better way to dispose of stuff like that).

 

[Townes_Van_Camp]

In theory, couldn’t you test it just like your aquarium?

 

[swiss2]

They easiest way to tell alk from ca is to pour a little in water. If the mixture turns milky as you pour then it’s alk. It’s all if it’s clear as you pour then it’s ca.

As for using 3 year old mixes, I’m not sure. Do you know the brand? How will you dose without knowing the potency?

 

[Randy Holmes-Farley]

Old solutions should be fine.

pH should tell you which is which.

 

[Randy Holmes-Farley]

They easiest way to tell alk from ca is to pour a little in water. If the mixture turns milky as you pour then it’s alk. It’s all if it’s clear as you pour then it’s ca.

To clarify, that needs to be seawater, not freshwater.