Clarification on shocking?

I have read both the view that a pool should be shocked following various situations (heavy rain/bather load, etc.) as well as weekly, and the view that shocking is not necessary unless testing indicates it is. I would rather not shock "just because" and only do it when necessary.

I am using a Walmart drop test and so far have not noticed any difference btw. my FC and CC readings. Is this test kit accurate enough - the FC is supposed to be read immediately and then wait 2 min. to read the CC. It's always the same. I'm supposed to look for ~.3 difference in values right? Is this OK (identical readings) and means I don't need to shock?

I always add chlorine at night and in the morning the levels seem to be the same. This is also an indication I don't need to shock, right?

Am I watching for everything I need to so far?

I will definitely get a better test kit next year, this one kind of drives me nuts, I want something more precise, this is like "ballparking it" - then again, what do I want for $12.99 I guess....:rolleyes:

Thanks very much!!

Amy

Amy,

The only thing you may be overlooking is how much a good kit will help you right now. You're right....the guesswork sucks. I suggest you go ahead and get Ben's kit....It'll be fine next year and you'll have it for start-up and eliminate all that guesswork. It'll be the smartest money you'll spend on your pool.

I know I need a new test kit and how much easier it will make things, but that won't be until next year.....For now I must make do with my little Aqua Chem kit.:(

Anyone have any ideas on what I can do with my current supply of lame testing materials? I would imagine many people use this test for chlorine, do none of them have a clue when they should shock?!

Thanks!! Amy

Unfortunately without an accurate test kit, you may have to shock it "just because" a few times to make sure you're not missing anything. However, in your situation, I would say that if your normal overnight chlorine consumption starts increasing, or if your water starts looking hazy, I would use those as indicators that shocking is needed.

Janet