When I fill the tub, and turn the jets on, black debris comes out.. It looks like black debris (mold particles)...disgusting. Please advise.

Always clean you jet tub as directed by the manual. If you don't have one, than fill tub above the jets, add liquid dishwasher gel (not tabs) with bleach and run through the jets for 20 minutes. Drain, fill with clean water and run two times to clean the tub and jets and then use. Be sure your metal filter is clean of hair and soap debris. This will keep your tub and jets nice and clean. Also recommend using Epsom salts and either essential oil of lavender or eucalyptus to your bath. Both essential oils have antibacterial properties. If you want it simpler, purchase Dr. Teal's lavender soak from the drug store. Happy soaking!

The problem you are experiencing is common to many jetted bathtubs.It is a result of dried bathing water in the tub. There are a couple of solutions to resolve this ongoing problem.

1. Use your tub more frequently as the water will not have time to fester in the pipes.
2. Use a cleaning solution made for cleaning the pipes on jetted bathtubs once every three months.

You find Cleaning and Maintenance Products for jetted tubs at the following website. US Parts Center


Rod
US Parts Center
888-521-6183

First of all, after each use, refill the tub with warm water and run the jets for about 10 minutes to clear out any excess debris etc.

To eliminate the smell/mildew/mold. :
-Fill the tub to above the jet level with HOT (over 140deg.) water
-Add two tablespoons of low sudsing dishwasher detergent and five cups of distilled white vinegar
-Run the jets for 20 minutes
-Drain the tub and use a tooth brush or any small brush to gently clean inside and around all of the jets and nozzles, remove all foreign material you can from the areas inside (disassemble the outter rings to do so) and around the outlets. Be as thorough as possible.
-Rinse and refill the tub with CLEAN COLD water and run the jets for another 20 minutes.
-Drain the water and the smell and mildew should be eliminated.

To prevent future mildew build up/odors once a month fill the tub with HOT water (again) and four to five cups of vinegar (no detergent) and run the jets for 20 minutes. Drain and fill with clean cold water running jets another 20 minutes. If the tub is used very often you can increase the scheduled flushing of the system to every two to three weeks. The mildew/mold flourishes in the warm wet areas inside the jet tubing and nozzles. Diligent maitenance is the best way to make sure you're not bathing with any unwanted guests in your bathwater!

-Take care

You need to get some jacuzzi cleaner solution or hot tub jet cleaner solution fill the tub with the solution and follow directions to clean them out needs to be done every couple months IF THIS HELPED PLEASE VOTE FOR ME

If the tub is more than 5 years old the rubber pump impeller could be disintegration.
If the debris just seems to be dirt then fill the tub above the intake with HOT water ... then add some dish washing detergent to the water ... run the pump about 1/2 to 1 hour

This is an automatic feature to dry out the pipes and prevent mold. The next time you turn on the pump after leaving these tubs for a few weeks you get lots of black **** in the water and this is what this feature prevents. Sounds like the tub is working fine :)

look on the back of the motor there should be a shaft that you can try to turn to spin free because something inside the pump is blocking it. rate me if this is helpful.

I filled a bowl with hot bleach water and sucked the water up. It cleaned the hose pretty well (along with the gunk that was stuck in the hand wand). Mine was filthy. It looked like it had mold growing in it. Then I ran several rounds of hot water through the hose. I alternated hot water & bleach. Did this about 8 times. It is not perfect, but it sure does look a lot better. 90% of the gunk is gone.

What you smell is algae forming in the pipes. If you have small black particles in the tub when running the jets, it is algae. Fill the tub with hot water, add 2 teaspoons of cascade dish soap and 1/2 cup bleach. run the tub for 15 minutes and drain. fill tub with cold water, run for 15 minutes and drain, tub is now ready to use. repeat as necessary.

Didn't fully drain at the end of last year, that gunk was mold, rust and gunk that's been sitting in the piping since last year. Not really a problem just remember to take a closer look at the plumbing on your tub next year and get all of the possible places that water may hold drained completely.