Powerful Eco-Friendly Deep Cleaner.   Bleach-free. Made in Hawaii. Free Shipping All 50 States.

Cistern & Catchment Bomb™: Cistern & Rain Water Tank Cleaner - 100 Grams

Keeping your cistern, catchment or rainwater tank clean is made simple. Drop it in, let it work, rinse it out.

  • Cleans up to 5,000 gallons of tank capacity (about $0.004 per gallon)
  • Helps remove slimy film and algae stains and neutralize odors through powerful deep cleaning Oxidation Technology
  • Helps keep tank surfaces cleaner and fresher
  • Easy drop-in cleaner, no scrubbing required
  • Eco-friendly, bleach-free formula that will not harm common tank materials
  • Free Shipping across all 50 US States
  • HOCL acts as an oxidizer to break down contaminant residue on tank surfaces and neutralize odors and stains at the source: proteins, fatty acids, amines, sulfur compounds, and more.

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Regular price $19.97
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Product Description

Keep your cistern and catchment tanks clean with the Cistern & Catchment Bomb™ Water Tank Cleaner. It breaks down contaminant residue and buildup on tank surfaces and neutralizes odors and stains at the source, keeping your tank fresh and odor-free.

Millions of Americans rely on private water systems like rainwater tanks. These systems provide independence but require regular maintenance. The SolutionsHOCL™ Cistern & Catchment Bomb is an easy-to-use, eco-friendly, bleach-free cleaner that removes buildup, stains and odors from tank surfaces through powerful deep cleaning oxidation technology™. Keep your tank cleaner, bleach-free.

How It Works

Uses a sodium-based ingredient that generates HOCL when dissolved in water. HOCL is an oxidizer that breaks down contaminant residue, buildup, and odor-causing soil on tank walls and surfaces. By lifting residue and reducing odors, the Cistern & Catchment Bomb helps keep your tank in top condition, ready for use whenever you need it.

Easy to Use

Available in 100-gram and 500-gram packages. Choose the size that fits your tank and follow the directions on the package.

Key Benefits That Make a Difference

  • Oxidation Technology: HOCL operates through powerful deep cleaning oxidation technology™, breaking down contaminant residue to help keep rainwater catchment tank surfaces cleaner longer
  • Eco-Friendly Qualities: HOCL breaks down contaminant residue, odors on tank walls and surfaces.
  • Versatile Application: Works on tanks, roofs, and gutters. Follow the directions on the package.

Simple Steps for Maximum Impact

Using the Cistern & Catchment Bomb is effortless. Dilute the cleaner as directed on the package and apply it to roofs and gutters to remove contaminant buildup. You'll neutralize odors and stains at the source and lift buildup, keeping tank surfaces clean.

Easy Application for Busy Lives

Cleaning your water tank has never been simpler. Follow the directions on the package, wait a few hours, and then remove any floating contaminant residue. This straightforward process helps keep your tank clean.

Experience the Power of HOCL

Regular use of the Cistern & Catchment Bomb™ helps remove buildup and keeps tank surfaces cleaner longer, helping reduce blockages. Each package comes in a resealable foil packet with a zip lock top and a free scooper for your convenience.

Elevate the cleanliness of your water storage tanks with the Cistern & Catchment Bomb™ Water Tank Cleaner. Order now and change the way you maintain your catchment and cistern tanks. Enjoy peace of mind knowing that your tank is clean.

This is a cleaning product for tank walls and surfaces, for use in non-potable water systems.

Safety and Usage Information

Warning

  • Keep out of reach of children.
  • Avoid contact with eyes and skin.
  • Not for direct consumption or application on food.
  • Store in a cool, dry place away from direct sunlight.

First Aid

  • If in eyes: Rinse cautiously with water for several minutes. Seek medical attention if irritation persists.
  • If on skin: Wash with soap and water. If irritation occurs, discontinue use and consult a physician.
  • If swallowed: Do not induce vomiting. Rinse mouth and seek medical advice immediately.
  • Package Size

    100 grams: Cleans up to 5,000 gallons of tank capacity
    500 grams: Cleans up to 25,000 gallons of tank capacity

  • Form
    Fine Powder + Granules
  • Compatibility

    Will not harm common tank liner materials including EPDM, PVC, polyethylene, polypropylene, and fiberglass. / Great for gutters and roofs

  • Dosage

    20 grams per 1,000 gallons of water.

  • Shelf Life

    1–2 years

  • Made In
    Hawaii, USA

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
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  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Cistern & Catchment Cleaner: Keep Your Tank Fresh and Clean

Effectively clean and maintain your cistern and catchment systems with our easy-to-use cleaner. Designed to remove buildup and neutralize odors at the source, it helps keep tank surfaces clean while protecting your storage tanks for long-lasting performance.

Cistern & Catchment Bomb tank cleaner
Woman pouring a product from a bag into a large metal tank with 'ECO Friendly Solutions HOCL'

How Removing Proteins, Fatty Acids & Odors Keeps Your Tank Fresh

Compounds Neutralized:

  • Proteins (from leaf litter, insects, bird droppings)
  • Fatty acids (from environmental runoff)
  • Amines (from decaying plant material)
  • Sulfur compounds (from decomposing natural material)

What Happens If Not Neutralized:
These compounds create slime, slimy film, and unpleasant odors, leading to rapid tank fouling.

Product Benefits:
By neutralizing and breaking down these compounds, Cistern & Catchment Bomb™:

  • Reduces odor and slimy buildup in tanks and pipes
  • Prolongs intervals between deep cleaning
  • Helps keep the tank interior fresher smelling
cistern & catchment bomb eco-friendly for rainwater tanks

Eco-Friendly Water Tank Cleaner for Cisterns & Rainwater Catchment Systems

The SolutionsHOCL™ Cistern & Catchment Bomb™ is a powerful, eco-conscious cleaner for your water storage tanks. Powered by Hypochlorous Acid (HOCL), it breaks down contaminant residue and buildup on tank surfaces, helping your cisterns and catchment tanks stay fresh and odor-free.

Works perfectly on Your Cistern & Catchment Tanks


Clean your catchment and cistern tank with HOCL. We formulate our SolutionsHOCL™ granules with HOCL. Read more on our About HOCL page.

Why Tank Cleaners Love It

  • no scrubing required for cleaning water storage tanks

    No Scrubbing Needed

    The formula does the heavy lifting. Simply add, wait, and rinse.

  • solutions hocl (hypochlorous acid) long lasting cleaners

    Long-Lasting Effects

    Helps keep tank surfaces cleaner longer and reduces the frequency of deep cleaning.

  •  Water Storage Systems

    Tank Compatible

    Compatible with most cistern materials, including plastic, concrete, and metal tanks.

  • solutions hocl ph friendly cleaners

    Neutral pH

    Balanced formula that is gentle on tank surfaces and fittings.

  • solutions hocl (hypochlorous acid) cleaners travel friendly

    Compact & Portable

    Easy to store and use for regular maintenance or emergency cleaning.

cistern & catchment bomb best cleaning formula clean water collection system

SolutionsHOCL™ Cleaning Formulas

Our cleaning formulas feature Hypochlorous Acid (HOCL) as a key component, breaking down contaminant residue and neutralizing odors and stains at the source through oxidation.

Our SolutionsHOCL™ products are formulated with environmentally friendly ingredients and come with a 100% Satisfaction Guarantee! Please take the time to review our full line of Home Healthy™ Cleaning Products.

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start cleaning water storage tanks with cistern & Catchment bomb

Your Cleaner Tank Starts Here

Choose a smarter, simpler way to maintain your cistern and catchment system. Made for homeowners and off-grid users alike, our cleaner is your go-to for a fresher, odor-free tank, bleach-free, with no scrubbing.

Frequently Asked Questions

What is HOCL and How Does It Function as a Water Tank Cleaner?

HOCL stands for hypochlorous acid. It is an effective and powerful cleaner used to keep water tanks surfaces clean. HOCL use powerful deep cleaning oxidation technology that helps break down residue and buildup on tank surfaces, making it very effective for cleaning.

What exactly is the Cistern & Catchment Bomb?

The Cistern & Catchment Bomb is a powerful cleaning solution designed to maintain and refresh your rainwater catchment or cistern system. It breaks down contaminant buildup residue, odors, and helps keep your tank clean bleach-free.

How often should I use the Cistern & Catchment Bomb?

For best results, use the Bomb once every 1-2 months, or after heavy rainfall when sediment and debris are likely to accumulate. Regular use helps maintain ongoing cleaning in your system.

Will it damage my tank or plumbing system?

Not at all. The formula is gentle on your cistern or tank material, pipes, and seals. It will not harm common tank materials including plastic, metal, and concrete. No corrosion, no residue, just a cleaner tank interior.

Why does this say "non-potable water systems"?

Cistern & Catchment Bomb™ is a cleaning product for the tank itself, not a water treatment. You fill the tank enough to cover the surfaces being cleaned, add the powder, let it work, then drain and refill with fresh water. The water used during cleaning is drained out, not kept. Follow the directions on the package.

Do I need to scrub or rinse my tank after use?

No scrubbing needed. Follow the directions on the package and the formula will do the hard work for you. For deep cleaning, we recommend a full flush and refill.

Is it environmentally friendly?

Yes! Our formula is eco-friendly, bleach-free, and phosphate-free.

Will this help with odors from my tank?

Yes! One of the main benefits of the Cistern & Catchment Bomb is odor control. It helps neutralize musty smells, algae-related odors, and other unpleasant scents at the source, caused by contaminant buildup.

Does this product expire?

The Bomb has a shelf life of up to 2 years when stored in a cool, dry place. We recommend keeping it sealed and away from direct sunlight to preserve maximum effectiveness.

How does SolutionsHOCL™ clean up your Cistern or Catchment Tank?

Simply follow the directions on the package, wait a few hours, and then drain and refill. This process helps maintain the cleanliness of your tank. Experience the power of HOCL Cistern & Catchment Water Tank Cleaner and keep your tank clean.