How do you return with rid of the flakey brown stuff that come out from the jet of my hot tub tub? I haven't used our whirlpool for several months and I run it...

I haven't used our whirlpool for several months and I run it the other day and the marine filled beside brown flakes from the jets surrounded by the lines. I ran it again today and it still did it. Is in that a specific cleaner that I can run through it to clean the lines up? I hold hard marine so I'm assuming that it is caused by this certainty. Any ideas will be handy. Thank you!
Sheepskin thought tools?
Answers:    We had alike problem when we bought our home a few years ago. Fill your tub with hot hose and turn on the jets, subsequent add give or take a few a cup of electric dishwasher detergent and let the jet run for several minutes. You may need to repeat once or twice, but this will work....and your tub will be so verbs. For maintenance if you are not using the tub regularly, do this about once a month beside 1/2 cup of dishwasher detergent. I do this about once a month and hold never had any other problems. Also, great if your tub get a "greasy" feel. Much easier after scrubbing!

best of luck to you!
How can I take the white stains out...
nearby should be filters inside the jet that need to be cleaned.