What can be dosed with limewater?

Randy Holmes-Farley · May 29, 2016

Calcium silicate is not very soluble, so the effect with silicate depends on how much you add. I may have jumped the gun on that one. Everything else would be OK.

Cory · May 29, 2016

Randy Holmes-Farley said:
Calcium silicate is not very soluble, so the effect with silicate depends on how much you add. I may have jumped the gun on that one. Everything else would be OK.

Ok great! Are you saying that adding sodium silicate to calcium hydroxide water changes its form to calcium silicate? And that it might be better to not dose sodium silicate with it?

Cory · May 29, 2016

From wikipedia:

Calcium silicate (often referred to by its shortened trade name Cal-Sil or Calsil) is the chemical compound Ca2SiO4, also known as calcium orthosilicate and sometimes formulated 2CaO.SiO2. It is one of a group of compounds obtained by reacting calcium oxide and silica in various ratios"

So it seems it will make calcium silicate.

I see your worry is if it forms calcium silicate it might not dissolve and be bioavailable. Correct?

Randy Holmes-Farley · May 31, 2016

Cory said:
Ok great! Are you saying that adding sodium silicate to calcium hydroxide water changes its form to calcium silicate? And that it might be better to not dose sodium silicate with it?

Water changers are fine for a small amount of silicate. Limewater (where calcium and pH are higher, may not be).

Randy Holmes-Farley · May 31, 2016

Cory said:
From wikipedia:

Calcium silicate (often referred to by its shortened trade name Cal-Sil or Calsil) is the chemical compound Ca2SiO4, also known as calcium orthosilicate and sometimes formulated 2CaO.SiO2. It is one of a group of compounds obtained by reacting calcium oxide and silica in various ratios"

So it seems it will make calcium silicate.

I see your worry is if it forms calcium silicate it might not dissolve and be bioavailable. Correct?

Correct, my concern is it precipitating and settling out of the limewater before it is dosed.

Cory · Apr 25, 2017

Can i mix potassium nitrate into my limewater?

JimWelsh · Apr 25, 2017

If you are talking about a solution of just water, calcium hydroxide, and potassium nitrate, then we look to the possible combined products to see if they are soluble or not. In this case, those products are potassium hydroxide and calcium nitrate. Since both potassium hydroxide and calcium nitrate are quite soluble in water, then, yes, you can.