[redrover]

Two questions!

#1 ranch house, 2 bath, flush master toilet, the tank refills, water stops then after a second or two a noise like a moderate air horn is heard for 5-6 seconds. This does not happen with other toilet in house. Any ideas?

#2 in looking for cause of first problem, under the house I found an air tank (about the size of the propane tank on my grill) attached to the water line. What is this? What is it for? Is it the cause of my noise in #1?

Thank you all!