Calcium carbonate will dissolve very slowly, but does provide both the
carbonates and the calcium for hardness. Calcium Chloride or Epsom Salts,
(Magnesium sulfate) will raise the hardness much faster. You might try a
mixture of both since the plants need both. For my ponds, I add about 2
pounds per 1000 gallons to maintain a high KH, but you would want to add
yours a little slower, since the baking soda will raise the pH to about 8.3
if you get a lot in the pond. I think that I would add double or triple
what you are adding per day.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html

"Priscilla McCullough" wrote in message
...
I was wondering if anyone has used calcuim carbonate in their water.
I am the one that posted about the calcuim bentonite on july 28.
est.. about 9000 gal pond. Green pea water.
I have been adding a coup of BS in my water every day for 4 days.
My readings are Amonia 0
Nitrite 0
Nitrate 0
Total hardness still 10
Total alkalinity still 60
PH is still 6.5

Hubby said if I was trying to make the water hard I needed to use Calcuim
Carbonate. He can get some at work.
Anyone use this or have thoughts?
Also some guy he works with told him to tell me to buy a roll of barley
straw and throw it in my settlement chamber.
I didn't think this worked for green water, just the stringie algae.

Priss