Mixing salt

[kken6217]

Depending upon what size cup you're using of course.

Using cups for measurement of dry solids is just plain wrong.

Huh? A cup is 8 ounces last time I checked. If you think this doesn't work, check out the pic I posted. Pretty much spot on.

 

[Tired]

"Cup" as in the unit of measurement, not as in the type of container.

Yes, there are inconsistencies depending on how packed the salt is in the cup, but 1 scooped-and-leveled cup, without packing it down, will generally hold enough salt for 2 gallons of water. Then you verify with a refractometer.

 

[kken6217]

I’m assuming we’re all talking about a cup in terms of measurement, and not a coffee cup etc.

I generally like to undershoot a little bit and then add more salt if necessary.

 

[gbroadbridge]

Huh? A cup is 8 ounces last time I checked. If you think this doesn't work, check out the pic I posted. Pretty much spot on.

Well last time I checked a cup is 250ml which if filled with water has a mass of about 250 grams.
Now, If I go back in the history books 50 years to imperial weights that is 8.8 oz.

Which goes to show a cup can be anything you like, whereas 40.3 grams is always 40.3 grams (at least since 1795)

 

[kken6217]

Still after using five 8 oz cups per 10 gallons, and making 40 gallons, my Hanna checker showed 35.1 ppt, and refractometer showed 1.026.

Anyway, regardless, it gets you in the ballpark, and then you can adjust accordingly.

 

[Randy Holmes-Farley Verified Community Expert]

I need to know why you can only mix for 4 hours. Doesn't the flow in our tanks equal mixing? What happens after 4 hours, does it ignite? Explode?

High alk salt mixes are very prone to precipitation of calcium carbonate, especially if they get warm. Much more so than a reef aquarium at the same pH and alk and temp. That is why Red Sea recommends only a short mixing time.

That said, a little calcium carbonate precipitation is likely not a big deal. I never worried much about it.

 

[Randy Holmes-Farley Verified Community Expert]

Well last time I checked a cup is 250ml which if filled with water has a mass of about 250 grams.
Now, If I go back in the history books 50 years to imperial weights that is 8.8 oz.

Which goes to show a cup can be anything you like, whereas 40.3 grams is always 40.3 grams (at least since 1795)

You foreigners and your worries about cups. lol Every kitchen in America has a labeled measuring cup. We also have other cups for coffee and tea, but none of us ever get those confused. It's like confusing a koala and a grizzly, both might be referred to as bears, but most people can tell them apart. lol

 

[kken6217]

High alk salt mixes are very prone to precipitation of calcium carbonate, especially if they get warm. Much more so than a reef aquarium at the same pH and alk and temp. That is why Red Sea recommends only a short mixing time.

That said, a little calcium carbonate precipitation is likely not a big deal. I never worried much about it.

Thanks for clarifying that.