HTH Spa Metal Out bottle with pour spout for easy start-up dosing.
Close-up of HTH Spa Metal Out label highlighting metal removal action.
Hands pouring HTH Spa Metal Out into a spa during start-up.
Clear spa water after treatment with HTH Spa Metal Out.
HTH Spa Metal Out bottle beside spa control panel ready for refill.
Packaged bottle of HTH Spa Metal Out on a cool dry shelf.
HTH Spa Metal Out removes metal deposits to prevent stains.
HTH Spa Metal Out bottle label shows compatibility with sanitizers.
Spa scene with sparkling clear water after using HTH Spa Metal Out.

hth Spa

HTH Spa Metal Out for Spas & Hot Tubs, 16 oz — Prevents Stains, Discoloration, and Scale

High-performance patio lawn and garden made for confident daily results

$27.51

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Why customers choose PatioZora Garden

HTH Spa Metal Out: Clearer water, protected surfaces

HTH Spa Metal Out is a concentrated metal-removal solution designed to guard spa and hot tub water against metals that commonly enter through fill water, such as iron and copper. By targeting these minerals, the formula may help reduce cloudy water, prevent staining on acrylic surfaces, and minimize mineral buildup on components. Use it at start-up and with each refill to maintain a steady line of defense, and note that one 16-ounce bottle treats up to 500 gallons. It is fully compatible with chlorine and bromine sanitizers, allowing it to slot into your existing maintenance routine without major changes.

What sets HTH Spa Metal Out apart is its dual action: it helps remove metals already present and helps prevent future buildup. This can contribute to crisper-looking water and lighter maintenance sessions, especially if you are working with water sources that carry higher mineral loads or when seasons alter water balance.

Key benefits

  • Stain and scale defense: a metal-out blend designed to shield water from mineral-related discoloration and deposits.
  • Metal removal: targets iron, copper, and other metals to support clearer, brighter water.
  • Ongoing protection: apply with each refill for continued defense alongside other metal-out products.
  • Easy dosing: a single 16 oz bottle treats up to 500 gallons; after dosing, run the filter for about 30 minutes to distribute evenly.
  • Sanitizer compatibility: safe to use with chlorine or bromine and fits into standard spa care routines with other products.

Real-life scenarios where Metal Out can help include fills from municipal or well water that introduce minerals, or seasonal changes that shake up water chemistry. Regular use may contribute to a more inviting spa experience, helping to maintain the look and feel of surfaces and equipment over time.

Usage and safety tips

  • How to use: At start-up or during refill, add the entire 16 oz bottle to a spa up to 500 gallons, then run the filter for at least 30 minutes to distribute evenly.
  • Storage and safety: store tightly closed in a cool, dry place; keep out of reach of children and pets.

FAQ

Q: How do I use HTH Spa Metal Out?

A: Add the full 16 oz bottle to a spa up to 500 gallons at start-up or during refills, then run the filter for 30 minutes to distribute evenly.

Q: Is HTH Spa Metal Out compatible with chlorine and bromine?

A: Yes, it works with both sanitizers and can be incorporated into your regular spa care routine.

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