OK. I think I have some idea now: When I get my (longed-for and much anticipated) kit I will be able to get accurate measurements. When I have accurate measurements I can use poolcalculator.com to figure out my response (under-dosing, then testing, then re-dosing if necessary). When I have done this enough I will develop a sense (similar to using the Force) whereby I will see a result and have an intuition about what to do in response. I will then teach it all to my husband...
About the tables I am so hung up on - I think I will just copy the relevant bits off the backs of the various chemical packages into one document so I'll have a basic guide, since there doesn't seem to be the professionally compiled lists I expected.
Thanks for your help. If nothing else you have reassured me that it is not at all unnatural to be confused at this point!
Alison
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