Drop. Clean. Done.
Just add it and let it work. Enjoy a fresh, clean cistern tank with zero scrubbing. Try it now and save.
Cistern Bomb™ – Bleach-Free Cistern Tank Cleaner (Powered by HOCL)
Keep your cistern tank clean, fresh, and odor-free with the Cistern Bomb™, a bleach-free solution that works through Powerful Deep Cleaning Oxidation Technology™. Whether you're doing monthly maintenance or a full deep clean, it helps reduce algae stains, odors, and contaminant buildup without harsh chemicals.
Order Cistern Bomb now and keep your cistern tank clean, bleach-free, no scrubbing needed.

Deep Cleaning Removes Buildup, Odors, and Residue From Water Tanks
If you rely on water tanks for household use, gardening, or rainwater harvesting, keeping the tank clean matters. The SolutionsHOCL Cistern Bomb Cleaner is designed to help you do exactly that, with earth-friendly ingredients that deep-clean tank surfaces without harsh chemicals.
Using the powerful oxidizing action of HOCL, the Cistern Bomb breaks down contaminant residue and odor-causing soil on your cistern walls from the inside out.
Not Just a Cleaner, A SmarterDeep CleaningSolution
While bleach and other harsh tank cleaners leave behind residues and foul odors, the SolutionsHOCL Cistern Bomb Cleaner works differently.
Why Cistern Bomb Works: Simple, Powerful Cleaning
Before and After

Say Goodbye to Smelly, Slimy Tanks
The SolutionsHOCL Cistern Bomb Cleaner is your go-to solution for clean, odor-free cistern tanks. Whether you clean seasonally or year-round, our HOCL-powered bomb helps keep your tank walls and surfaces clean.
How to Use
Dose: 1 scoop (20 grams) per 1,000 gallons of tank capacity. A 100 gram pack cleans up to 5,000 gallons.
Steps:
- With water in the tank, fill or partially fill to cover the soiled walls and surfaces.
- Add the Cistern Bomb at 1 scoop (20 grams) per 1,000 gallons.
- Let the solution contact the tank walls and surfaces for 30 to 60 minutes. The oxidizing action loosens film, residue, and deposits with no scrubbing.
- Drain the tank completely. The loosened contaminants drain out with the cleaning water.
- Rinse with fresh water, then refill your tank for normal use.
The People First Choice for Cleaning Cistern Tanks
Everything You Need to Know About Cistern Cleaning
General Questions
What can HOCL (Hypochlorous Acid) neutralize?
What can HOCL (Hypochlorous Acid) neutralize?
Hypochlorous acid is a naturally occurring oxidizer, it’s actually produced by white blood cells in the human immune system as part of the body’s own defense response. In cleaning and sanitizing applications, HOCL is widely recognized for its oxidizing action against a broad range of organic material and odor-causing compounds on surfaces. Because specific antimicrobial or pesticidal claims are regulated by the EPA under FIFRA, we keep our product descriptions focused on what our formulations are actually registered and labeled to do, you’ll find that detail on each individual product page rather than as a general claim here.
What is the Cistern Bomb Cleaner?
What is the Cistern Bomb Cleaner?
It is an earth-friendly cleaner formulated to deep-clean cistern tanks and surfaces using Hypochlorous Acid (HOCL). It helps break down contaminant buildup, stains, and odors on tank walls and surfaces.
Is this cleaner compatible with all types of water tanks?
Is this cleaner compatible with all types of water tanks?
Yes! It's non-corrosive to plastic, concrete, fiberglass, and metal cisterns at recommended dilution.
I store water in my cistern. What should I know?
I store water in my cistern. What should I know?
The Cistern Bomb is designed for non-potable systems. If your tank is later used for potable water, drain and flush thoroughly after cleaning and follow your local water-safety guidance.
Does it work in cold water?
Does it work in cold water?
Yes. It dissolves completely and starts working immediately, even in very cold conditions, no heating required.
How much should I use?
How much should I use?
Use 1 scoop (20 grams) per 1,000 gallons of tank capacity. A 100 gram pack cleans up to 5,000 gallons and includes a measuring scoop.
How long does it take to see results?
How long does it take to see results?
You will notice a cleaner tank and reduced odors within hours. Full results, including contaminant and grime removal, typically appear within a few days.
What makes it a top choice for cleaning water tanks?
What makes it a top choice for cleaning water tanks?
It is HOCL-powered, cleaning odor and contaminant buildup effectively without harsh chemicals. It is fast-acting and ideal for year-round use, even in winter.
Effectiveness & Ingredients
What makes HOCL different from bleach?
What makes HOCL different from bleach?
HOCL cleans through powerful oxidation technology and works on contaminant residue and buildup without bleach. It is bleach-free, so it cleans deeply without harsh fumes or the residue bleach leaves behind.
Does it help with buildup and stains?
Does it help with buildup and stains?
Yes. It helps break down contaminant buildup and residue commonly found on tank surfaces.
Are the ingredients eco-friendly?
Are the ingredients eco-friendly?
Yes. The cleaner contains eco-conscious ingredients including a sodium-based cleaning agent that generates HOCL in water, all designed forperformanceand sustainability.
Usage & Application
How do I use the Cistern Bomb Cleaner?
How do I use the Cistern Bomb Cleaner?
Add the amount for your tank size, let it contact the walls and surfaces, then drain and refill with fresh water. Full directions are on the packaging.
How often should I use this cleaner?
How often should I use this cleaner?
Deep clean every 2 to 3 months for best performance. In humid or tropical climates, monthly may be ideal.
Can I use it for my RV or boat water tank?
Can I use it for my RV or boat water tank?
For best results, use our RV Tank Cleaner for RVs and our Marine & Boat Tank Cleaner for boats. The Cistern Tank Cleaner is designed for larger storage systems like cisterns and catchment tanks.
Safety & Storage
How should I handle it around pets and kids?
How should I handle it around pets and kids?
Keep undissolved product out of reach of children and pets. Avoid contact with eyes and skin, and follow the label.
How should I store the product?
How should I store the product?
Store in a cool, dry place away from direct sunlight. The product is shelf-stable and long-lasting.
Does it leave any strong smells?
Does it leave any strong smells?
No. Unlike bleach-based products, it leaves no lingering odors, just a clean, fresh-smelling tank.
