All my homes have had a whole house filter for the last 32 years and these are the only filters I have ever had problems with. About a week after installation, I noticed a sharp drop in water pressure in my faucets. I removed the aerators from the faucets and they were clogged with black material (filter carbon deposits). I replaced the first filter and put in a second and the same thing happened again. I went to HD and bought a popular brand and I no longer have the problem. I will never buy these filters again.
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