Powders mixing

[Parsa0361]

According to above instructions if I wanna increase my 50 gallons tank Alkalinity from 1.2 dKH, I have to add 5.35 grams of powder.and for sure, first I have to mix it in water then add it by dosing pump to my tank .that's my question how much water for 5.35 g powder do I need?
In my openion I have to take this 5.35 grams powder from that stock solution ( 20 g in 8 fl.oz or 236 ml ).It means I have to add my alkalin powder in 2.14 fl.oz ( 63 ml ) water.It's abit confusing.

 

[Randy Holmes-Farley Verified Community Expert]

Can you tell us what product this is?

I assume you mean you want to raise alkalinity by 1.2 dKH, not "from" 1.2 dKH?

 

[Parsa0361]

Can you tell us what product this is?

I assume you mean you want to raise alkalinity by 1.2 dKH, not "from" 1.2 dKH?

Sorry,yes. You're right

Brightwell alkalin8.3-p

 

[Randy Holmes-Farley Verified Community Expert]

OK, so avoiding all the math, we can just use a calculator and assume it is baking soda (its not exactly, but it will be close enough for dosing math).

Reef Chemistry Calculator

You will need about 6 grams (close enough to the 5.35 grams) or 1.5 teaspoons of solid material dissolved into any amount of fresh water you want, as long as it all dissolves. 100 ml will do. So will 500 mL. Add that split into 2 or three doses over a day or two.

 

[Parsa0361]

Sorry,I have another question

Reef chemistry calculation

Why the calculated numbers on above application are so different from the calculated method in brightwell site:
I did the same for 50 gallons for increasing 1.2 dKH by brightwell powder

One of them shows 8.8 g
And one of them 5.35 g
Am I doing something wrong?

App☝
Brightwell site

 

[Dan_P]

According to above instructions if I wanna increase my 50 gallons tank Alkalinity from 1.2 dKH, I have to add 5.35 grams of powder.and for sure, first I have to mix it in water then add it by dosing pump to my tank .that's my question how much water for 5.35 g powder do I need?
In my openion I have to take this 5.35 grams powder from that stock solution ( 20 g in 8 fl.oz or 236 ml ).It means I have to add my alkalin powder in 2.14 fl.oz ( 63 ml ) water.It's abit confusing.

The key here is for every one gram of powder you want to add to the aquarium, the manufacturer suggests dissolving the powder in 4 ounces of water and then adding the water solution. But first you need to determine how much powder is needed and you get that number by using their example calculation but using your system’s total gallons and desired increase in dKH. Clear as mud?

 

[Randy Holmes-Farley Verified Community Expert]

Brightwell is notorious for supplying faulty numbers, and the info for the calculator came from them at some point. Maybe the product has changed also.

But I'm skeptical of the calculator entry for the Brightwell since it shows less potent than baking soda,a nd I do not think that is likely true.

The 5.35 looks more accurate, as a mix designed to be pH neutral at pH 8.3 should be a bit more potent than baking soda. That said, they say sulfate is in it which I cannot explain.

Anyway, pick a dose and try it. It's not super critical to be exacting.