BRS Magnesium 2 Part

[Hallowhead]

Howdy,

I need some justification to what I just did....

I didn't have a gallon mixing container at first so I decided to use a 32 ounce soup container as I have done for my trisodium phosphate & nitrate solutions.

I divided the BRS formula by 4 since there are 4 32 ounce containers in a gallon. This resulted in ~1 - 1/4 cups chloride & 1/2 cup sulfate. My chloride was hydroscopic so I had to measure it out via grams. I used a convert from cups to grams of magnesium chloride and came up with ~686 grams.

So I got all of my math out of the way and began mixing... I filled the 32 ounce container half of water and began dumping chloride into the container roughly ~90 grams at a time... it got to a point where I couldn't fit anymore chloride into the container because the water level came too high to pour anymore - at this point I was confused. I grabbed a large metal kitchen mixing bowl against all judgement & dumped my solution into that and began adding the remaining grams of chloride at this point nothing more was dissolving so I added another half 32 ounce container of RO/DI water to help finish the solution. I than added the half cup of sulfate no problem - I stirred the solution thoroughly & container-ed it for usage...

Here is the part where I got really confused... according to BRS calculator I needed to add 150 ml to raise the mag from 1240 to 1300 ppm...

How can I ensure I did this right? Can I test the mag of the solution somehow?

 

[Copingwithpods]

You can do this, use 1 gallon of water, test mag before adding then test after adding your mix, this will tell you if your mix is correct. If not correct note the difference and just scale it up to your tank volume.

 

[Hallowhead]

You can do this, use 1 gallon of water, test mag before adding then test after adding your mix, this will tell you if your mix is correct. If not correct note the difference and just scale it up to your tank volume.

I can't take a gallon from my tank. But I guess I can test at 0 mag and than dose 5ml or 10 ml and see where it brings me

 

[Copingwithpods]

I can't take a gallon from my tank. But I guess I can test at 0 mag and than dose 5ml or 10 ml and see where it brings me

To be honest I don't know if testing in ro water and at 0 mag the test kit will be accurate, but again I have no clue.

You could always turn your ATO off, run the test and add that gallon right back.

 

[Hallowhead]

Bump

 

[homer1475]

Your supposed to mix in a total of 1 gallon.

Your math seems right to me(as far water and the right amount of salts). What should have probably done is start with half the water, then add salts, then add more water to make up the 32 ounces.

If you read the directions on how to mix the salts, they basically tell you that(start with 1/2G, add salts, mix, add water to make 1 gallon).

And yes, it does take quite a bit of MAG to increase it a small amount.

 

[Hallowhead]

Your supposed to mix in a total of 1 gallon.

Your math seems right to me(as far water and the right amount of salts). What should have probably done is start with half the water, then add salts, then add more water to make up the 32 ounces.

If you read the directions on how to mix the salts, they basically tell you that(start with 1/2G, add salts, mix, add water to make 1 gallon).

And yes, it does take quite a bit of MAG to increase it a small amount.

I think 20ml raised it from 1240 to 1320.. so I think it's a little strong. I need to somehow test the solution safely. Maybe I'll take a gallon of salt water from mixing station test add 10 ml and test again