Instapure waterfilter

[clrmore]

I have a Instapure waterfilter (The model is either F-2CE F-3CE or F-6CE it has a chrome cartridge dispenser (holder)), which I like very much. All I want to know is "WHEN" do I change the cartridge??

[waterfilters]

Here is the replacement filter you need:
http://www.waterfilters.net/Waterpik-R-2C-InstaPure-Faucet-Water-Filter_p_0-384.html

The filter should be changed every 3 months or 200 gallons.

Thank you,
WaterFilters.NET