If you a dosing with a quality two part system the easiest thing to do is test your levels then add the maximum dose of each as the instructions dictate (ie. 5mL per 10gal) then wait an hour and test again to see how much the levels rise. Then measure the levels every 24 hours (preferably test at the same time each day) for 3-4 days and record the drop. Average those readings out to figure your tanks demand then use the first dose measurement to figure how much to add each day.
For example:
If you add a full dose of ca and alk and the levels rise 30ppm and through your testing you find your tank consumes 15ppm per day then you will need to add half the maximum dose on the bottle each day.
So when I dosed manually I found a 4:4:1 ratio of ca:alk:mg was about right.
Hope that helps
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11-17-2012, 08:07 AM
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