I have a large carbon filter on my water system that does an automatic backwash every 3 days. My toilet flush control seems to get plugged up every week or so, I have to take the top off, run some water and then replace it. When I do this I notice there are black grains in the toilet tank. I talked to a friend and he seems to think there's a problem in the carbon filter, the tube is not seated right.
Questions: 1. How do you replace the media in a carbon filter?
2. How hard is it to do?
3. What is a good source to buy the media?
4. Does my friend's assessment of my problem seem right? I'm thinking the grains in the toilet coincide with the backwashing cycle which tells me they are being flushed out of the filter during backwashing. What would cause that?