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Can You Use Hot Tub Water on Plants?

Hot tubs are usually very hot, which can be great for use in a pool or spa. However, the water may not be safe to use on plants because it is so acidic and doesn’t have much nutrient value. This means that you should always either drain the tub before using it on plants or rinse off any excess chemicals with fresh water first.,

The “what to do with drained hot tub water” is a question that has been asked before. It is important to remember that the answer to this question is not universal, and varies depending on what type of plant you are trying to grow.

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Hot tubs may carry a large amount of water, ranging from hundreds to over 1,000 gallons. Recycling that water in your yard or garden is much more appealing than just dumping it, particularly in areas where water is scarce. 

Should you use hot tub water to irrigate your plants? You may and should use the water from your hot tub to water your plants. Certain plants respond better to hot tub water than others, and you should always test the water for pollutants before applying it to your plants.

Can-You-Use-Hot-Tub-Water-on-Plants

Find out how to best recycle your hot tub water for your plants, as well as some alternative uses for it when it’s time to drain it, in the sections below.

 

Contents Table of Contents

  • Using Hot Tub Water to Water Plants
  • Checking the Water in Your Hot Tub
  • Plants that grow well in hot tubs
  • Other Options for Reusing Hot Tub Water
  • When Should You Change The Water In Your Hot Tub?
  • Hot tubs are useful for more than just relaxing.

Using Hot Tub Water to Water Plants

Gray water refers to water that has been utilized and is no longer in its original, pure state. Hot tub water falls into this category. However, using hot tub water on your plants is still entirely acceptable.

Using the water from your hot tub may be as simple as planting your favorite shrubs and flowers in the natural drainage channel. Fill a big bucket with some of the hot tub water and use it to replenish your watering can as needed.

While you may water your plants with hot tub water, you shouldn’t use it to water your food garden. It’s never a good idea to put hot tub water on something you’re planning to eat later.

It’s crucial to evaluate the chemical levels in recycled hot tub water before you start watering your plants with it to make sure it’s safe for them. It won’t take you more than a day or two to adjust the chemicals to the proper amounts.

 

Checking the Water in Your Hot Tub

Depending on the sort of system you employ for maintenance, you’ll need to evaluate the chemical levels in your hot tub water. If the levels are too high, the water may harm your plants rather than help them grow, so double-check before dumping it into your garden.

If your hot tub is sanitized using a salt system, it’s better not to use the water on any plants. Even if you strive to keep the salt level balanced, there will still be salt in the water that will eventually build up in the soil. Most plants do not thrive in saltwater. It’s preferable to just drain it using the proper procedure.

What should be tested:

  • Chlorine
  • Bromine
  • pH
  • Temperature

Chlorine

High quantities of chlorine are harmful to your plants, therefore you should test the water before using it. When you give chlorine a chance to evaporate, it does so swiftly. It should take no more than two days to totally fade.

At least 24 hours before you want to empty your hot tub, don’t use or treat it. This should provide enough time for the chlorine to dissipate on its own. To assess the amount of chlorine, use a test strip. It is safe to use on your plants after it falls below 1.5 ppm.

Open the top and put the jets on high if the chlorine levels aren’t low enough after a day of sitting on its own. This should get rid of any leftover chlorine and make the water safe to drink.

Even if you aren’t planning on emptying your hot tub anytime soon, you may utilize the water on your plants. Simply fill a 5-gallon bucket halfway with water and let it set overnight before using. The chlorine levels should be suitable for your plants after that period of time.

If you don’t want to use chlorine, make sure to read our post, where we discuss other alternatives that work just as well.

Bromine

Bromine isn’t hazardous to plants in general. Nonetheless, you should keep the bromine level in your hot tub water within the suggested limit for a conventional spa, which is 2.0 to 4.0 ppm. If you want a more precise reading, you might use a bromine test strip.

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pH

You should test the pH balance of your hot tub water before using it to irrigate your plants to ensure it is in the neutral zone. On the pH scale, it should be between 7.2 and 7.4. A simple pH test strip may be used to determine the pH level of your hot tub.

If the pH level is out of equilibrium, you may use sodium bisulfate to reduce it or sodium carbonate to boost it. Your plants may be harmed if the pH balance in your hot tub water is too low or too high.

Temperature

The water in a hot tub is designed to be hot, but spraying it directly on your plants might harm them. To guarantee that the water from your hot tub is safe for your plants, let it cool before using it to water them. Before you use it, the water should be approximately 68 degrees. Allowing it to cool overnight provides it enough time to reach the ideal temperature.

Plants that grow well in hot tubs

Some plants do better when they’re irrigated with recycled water from your hot tub. For an added touch of landscaping, put some of them around your hot tub or where the water will be drained.

The Best Plants to Water in a Hot Tub:

  • Aloe
  • Grass of Deer
  • Euonymus (evergreen)
  • Plant of the Ice Blue Star
  • Juniper
  • Marigold
  • Oleander
  • Tree of Olives
  • Rosemary
  • Ranger from Texas

If you’re not sure how your grass or particular plants will respond to the hot tub water, start with a little amount and see what occurs. This kind of water testing can protect your plants from serious harm.

Other Options for Reusing Hot Tub Water

Recycling water is an excellent technique to reduce the quantity of fresh water used in your home. The hot tub is a terrific supply of water to tap into anytime you need it in locations where conserving water is important.

Wash Your Car — Using a submersible pump and a water hose, you can route the water from your old hot tub to your driveway and give your automobiles a thorough cleaning. With a nice bucket and some sponges, you can even go old school.

Wash Outdoor Equipment – If your patio furniture or lawnmower has seen better days, you can revive them with hot tub water. Recycled water can be used to clean grills, trash cans, and even the outside of your home.

Drain hot tub water into pool — Larger pools are more than capable of accommodating a hot tub’s worth of water. It may also be used to fill a mini pool for your pets to cool down in.

When Should You Change The Water In Your Hot Tub?

Before emptying your hot tub somewhere, make sure you check the requirements in your region. The rules governing the draining of hot tubs differ by location, so it’s best to be safe than sorry.

It is suggested that you replace the water in your hot tub every 3-4 months. Some individuals believe that you should change the water every two months, and that it should be emptied and refilled six times a year.

Signs that the water needs to be changed include the following:

  • No matter how many times you filter or shock the water, it remains hazy.
  • Foam builds on the surface of the water and refuses to disappear.
  • Your hot tub has developed an unpleasant odor.

While there are techniques to prolong the life of your hot tub water, such as washing before you soak and filtering it for extended periods of time, you should still replace it at least every four months.

Hot tubs are useful for more than just relaxing.

If the concept of saving water relieves some of your tension, your hot tub may serve a dual purpose. You can recycle the large quantity of water it utilizes for different reasons around your property even while you’re not lounging in it.

It’s a terrific technique to recycle hot tub water by watering plants with it. Always remember to check the chemical levels in your hot tub water before dumping it on your garden. And never, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, You’ll never have to worry about your plants running out of water with so much on hand.

 

The “spa stabilizer” is a chemical that can be used to protect plants from the heat of the hot tub. It’s recommended that you use this product before adding your plant to the water.

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