Steam from under the cover will vent creating the damp situation moss needs to grow. To remove moss on a hot tub cover saturate it with cleanall and allow to soak for 5 minutes.
Following up with a conditioner like hot spring cover shield will help keep your cover in good working condition for longer.
How to get rid of mildew smell in hot tub. To successfully shock the tub you should know the number of gallons in your spa to be sure that you don t under dose it with spa shock. Too high and the staleness will ruin your hot tub party. If the smell persists there may be mold or mildew around the hot tub on grout tiles the walls or other nearby areas.
The best way to deal with mold in an inflatable hot tub is following every sanitation process outlined in the manual. Allow your hot tub to fully air out for up to 10 minutes after you remove the cover. Remove it from your hot tub then spray it with a mixture of dish soap and water and wipe it down.
If your hot tub cover is moldy give it a thorough cleaning. If you can find the source of the smell you won t have to go through the trouble of adjusting water chemistry if your cover just needs a good cleaning. Too low means the smell of the water will have you looking for a rodent nearby.
Also you will want to remove and inspect your hot tub filter as bacteria and mold can build up in the filtration system and cause a foul odor if your filter is more than a year old or in bad condition it is best to replace it otherwise make sure you are cleaning it regularly with filter cleaner to avoid bacteria build up and ensure that your filtration system is clean and able to do its job properly. Unzip the openings of your hot tub cover that hold the foam inserts. 3 use a broom or heavy brush.
You want to prop it upright to drain so if it folds make it stand up in a v. This permits air to circulate within the hot tub cover and allows the heavy foam inserts to dry. To clean the mold off you will need water mixed with detergent and bleach a sponge antibacterial agents and a dry towel.
Moss grows in damp and shady conditions. Then using the rough side of a sponge gently scrub the moss off. They can have a musty dirty smell that is very strong especially if the cover has been only recently removed from the hot tub.
The vinegar itself holds cleaning and disinfectant qualities that will break up mildew growth and when the vinegar mixes with the baking soda it foams and cleans the drain walls. Wait for a warm sunny day with no clouds or rain and remove your hot tub cover. The proper ph level of a hot tub is a deal maker or breaker.
Drain the tub s water entirely and clean the inner and outer surfaces thoroughly. After heavy use of your spa or hot tub or every few weeks regardless of use shocking the spa will quickly kill bacteria in the water. Make sure that the ph level is always between 7 4 7 6 so you can keep a clean and welcoming hot tub.
Pour 1 2 cup vinegar into the drain directly on top of the baking soda.