Dosing Sulfur ?

[GuppyHJD]

Tank is 120 gallon with 20g sump, I use 130 as volume.

 

[Randy Holmes-Farley Verified Community Expert]

130 gallons is 492 liters.

You suggested an increase of 232 mg/L S.

That means 492 L x 232 mg/L = 114,000 mg or 114 g S.

Sodium sulfate (anhydrous mw = 142 g/mole) is 22.5% by weight S.

You thus need to add 114/.225 =507 g of sodium sulfate. I’d add that over a week.

 

[GuppyHJD]

130 gallons is 492 liters.

You suggested an increase of 232 mg/L S.

That means 492 L x 232 mg/L = 114,000 mg or 114 g S.

Sodium sulfate (anhydrous mw = 142 g/mole) is 22.5% by weight S.

You thus need to add 114/.225 =507 g of sodium sulfate. I’d add that over a week.

Thank you

 

[GuppyHJD]

130 gallons is 492 liters.

You suggested an increase of 232 mg/L S.

That means 492 L x 232 mg/L = 114,000 mg or 114 g S.

Sodium sulfate (anhydrous mw = 142 g/mole) is 22.5% by weight S.

You thus need to add 114/.225 =507 g of sodium sulfate. I’d add that over a week.

Randy,
When I try to create a solution to add over a week, I put 509g of sodium sulfate in 1 liter of RODI. The sodium sulfate will not mix. Most of it does but I still have 25% in the bottom of the bottle as crystals/solids. I can double the water and then add 150/200ml a day?

 

[Randy Holmes-Farley Verified Community Expert]

If you are using anhydrous sodium sulfate, that amount is well above the solubility limit of about 280 g/L. I would double or triple the amount of water, then dose 2 or 3 times as much.

 

[GuppyHJD]

If you are using anhydrous sodium sulfate, that amount is well above the solubility limit of about 280 g/L. I would double or triple the amount of water, then dose 2 or 3 times as much.

Thank you