Dosing alk and cal

[dino]

so when you use soda ash what are you trying to achieve? because at my work we use soda ash strictly to increase ph and I use sodium bicarbonate to increase alkalinity. I wonder what others say? I dose calcium chloride and sodium bicarbonate and magnesium occasionally

[dcw1sfu]

Originally Posted by dino

so when you use soda ash what are you trying to achieve? because at my work we use soda ash strictly to increase ph and I use sodium bicarbonate to increase alkalinity. I wonder what others say? I dose calcium chloride and sodium bicarbonate and magnesium occasionally

I use soda ash to raise alkalinity which also has the property of raising PH. Soda ash is sodium carbonate, which is what you achieve if you heat sodium bicarbonate.

To raise alk by 1DKH in a 100 gallon tank, you would use 11.4 grams of sodium bicarbonate, or alternatively use 7.2 grams of soda ash (sodium carbonate)

[dino]

Both will raise ph but bicarb is much more efficient for alkalinity with less of a ph swing. If this was not the case then every pool would not use bicarb for alk

[dcw1sfu]

Originally Posted by dino

Both will raise ph but bicarb is much more efficient for alkalinity with less of a ph swing. If this was not the case then every pool would not use bicarb for alk

Strange, every time i use Sodium Bicarbonate to raise alk, I see a PH decrease.

I don't see much of a PH swing using sodium carbonate as I use a dosing pump every 2 hours to dose it.

[dino]

Not the case I add many times a day to huge volumes and see ph raise after adding. We use soda ash to raise when we use gas chlorine which lowers ph