Red sea alk powder

[Steamreefer]

Hey all, im changing from red sea liquid mag cal and alk to the powders for cost savings. I watched the brs video on how to mix them so they're equal in strength to the liquid version. The alk however is a bit confusing. They show how to mix it up to 1/3rd the concentration.

My question is, I use the reef calculator website for dosage amounts. When you select red sea powder as your option on there it gives a weight of powder to add rather than a liquid volume. Since mag and cal are supposed to be the same concentration as per the brs video I assume we can select the liquid on the website and dose the same way. But like mentioned the alk is only 1/3rd the concentration, can I just select a larger tank size? For example if I have 100 gallon tank, can I dose the amount of alk for a 300 gallon tank and use the liquid measurements? Or how are people getting the proper dosage amount?

 

[Rocks reef]

@Randy Holmes-Farley

 

[Randy Holmes-Farley Verified Community Expert]

I'm not going to try to figure out a second hand video, and Red Sea has several products, but...

if you are dosing Foundation B:

Red Sea's KH/Alkalinity | Foundation B -Balanced Coral Skeleton formation

How much KH/Alkalinity to supplement? Check out our new MyRecipe™ Wizard, which recommends the optimal Alkalinity level that is best for your

redseafish.com

Then they say:

Liquid supplement: 1ml will raise the Alk level of 100 liters (25 gal) by 0.036 meq/l (0.1dKH)
Powder supplement: 1g will raise the Alk level of 100 liters (25 gal) 0.12 meq/l (0.33dKH)
1 kg will make 10L of stock solution.

Then if you mix at the Red Sea ratio of 1,000 g/10 L RO water, then the potency of your alk part will be:

1 mL will raise the alk level of 100 liters (25 gal) by 0.033 dKH.

That makes it 1/3 as strong as the commercial liquid.

They may advise that because dissolving the solid yourself may be quite hard to attain their liquid potency.

But if you want to try to match, mix it 3 times stronger and see what happens.

 

[Randy Holmes-Farley Verified Community Expert]

If you decide what potency you are using, we can advise on a calculator.

 

[Randy Holmes-Farley Verified Community Expert]

If you use this calculator and the entry for Red Sea foundation alkalinity liquid, it gives the correct value for their liquid, not the self dissolved one

Reef Chemistry Calculator

 

[Steamreefer]

Yeah that calculator, I was just wondering if people just add 3x the amount such as, dose based on a 300 gallon system for a 100 gallon system.

 

[Randy Holmes-Farley Verified Community Expert]

Yeah that calculator, I was just wondering if people just add 3x the amount such as, dose based on a 300 gallon system for a 100 gallon system.

That would work fine.