Chlorine testing and carbon blocks

[Muffin87]

Residual chlorine (no chloramines) in the water mains where I live in Italy is between 0,03 and 0,05 ppm.
Do I need a very good 1 mcr carbon block, or can I just get a cheap 10 or 5 mcr carbon block and replace it once a year?

Is it recommended to test for chlorine after the carbon blocks, or do you simply change them out every 6 or 12 months using some kind of guesswork?

If you have a small 50G, wouldn’t sediment filters and carbon blocks last much longer than a year, since some of them have a life span of 4000 Gallons?

 

[monkeyCmonkeyDo]

You speak good english? Call air water and ice in flordia and talk to them on the phone. They will help you.
D