On my Tiffin Allegro Bus I purchased a spare filter housing just like the ones I have on the coach. I fill the housing with 1.5 cups of beach which is the correct amount for sanitizing my 90 gal fresh water tank. Screw the top on and connect the portable water supply hose at my storage lot to the input and connect my hose reel to the output. Turn the water on and fill the tank to 100% and let it stay for 24 hrs. Open each faucet in the coach to get sanitized water through reach line. After 24 hrs drain and refill with fresh water. Open each faucet to flush each line. Very simple and it works. I used water test kit to verify.
