Hi Chris,Chris-x1 wrote:It took 0.3mls or the reading was 0.3 mls when the colour changed ?
If the reading was 0.3 mls then you read off the meq/l (in the instructions), multiply by 50 to give convert the answer to mg/l of CaCO3 then divide the answer by 180 to find out the amount of CRS required per litre of water you are treating.
Thanks' again for the help.
It changed colour at 0.30.
What is the alkalinity check soluton for, is it for sea water?