Hello, We are having a recurring problem with one of our shower head filters clogging up and requiring clearing approx. every week. It worked fine for a good 6 months. It's an 8" sunflower rainhead. It is one year old including the copper pipes (new throughout) which are run overhead in the crawlspace. Also, the adjacent toto gmax toilet is acting strange....when flushed there is a delay of a few seconds before the tank refills. When the cover was taken off we noticed quite an accumulation of rust colored sediment on the bottom. We inspected another bathroom close by and there is sediment in that tank as well but not as much. It is funtioning normal as is the shower head. These bathrooms are both just under a year old and the whole house was replumbed with copper at that time. Any ideas/suggestions appreciated. PB