Solutions HOCL™ Cistern & Catchment Bomb™ Shock Treatment + Heavy-Duty Cleaner - 100G
Description
Description
Cistern & Catchment Shock Treatment & Heavy Duty Water Tank Cleaner – 100 g
Stored water systems often develop slime, organic buildup, and unpleasant odors over time—especially in cisterns, catchment tanks, roofs, and gutters. This buildup can make water appear dirty, smell bad, and require heavy cleaning to reset the system.
Our HOCL-based Shock Treatment & Heavy Duty Cleaner is designed as a powerful, one-time deep clean solution that targets these common problems at their source. Using Natural Oxidation Technology™, it helps break down organic film, lift residue from tank surfaces, and neutralize odor-causing compounds—restoring your system before switching to simple monthly maintenance.
This 100 g size treats up to 5,000 gallons, making it ideal for standard residential cisterns or multiple smaller tanks.
Why HOCL-Based Natural Oxidation Technology™
Hypochlorous acid (HOCL) is an oxidizing compound generated when NaDCC (sodium dichloroisocyanurate) dissolves in water. As an oxidizer, HOCL breaks down the organic compounds that accumulate as slime and organic film on cistern and catchment water storage tank surfaces, including:
- Proteins, from leaf litter, insects, and bird droppings entering your rainwater catchment system
- Fatty acids, from environmental runoff and organic debris in stored water
- Amines, from decaying organic matter in cisterns and rainwater tanks
- Sulfur compounds, from decomposing natural material that causes unpleasant odors in stored water
After the oxidation reaction, the active ingredient converts primarily into salts and water, reducing chemical residue in your cistern or catchment tank system. HOCL chemistry is widely studied and referenced in environmental cleaning literature for its oxidizing properties. Visit our Scientific Studies page for published research on hypochlorous acid.
Ideal for These Cistern and Catchment Water Systems
- Rainwater catchment cisterns showing visible slime, organic film, odor, or discoloration on tank walls
- Off-grid homes, rural properties, and farms relying on stored rainwater tank systems for daily use
- Large rainwater storage tanks and multi-building cistern systems needing periodic heavy-duty tank cleaning
- Properties wanting an eco-conscious water tank cleaner alternative that works without bleach or harsh chemicals
- Anyone who wants a one-time Shock Treatment reset, then uses our Monthly Maintenance & Light Cleaner for ongoing cistern care in between
How to Use the Cistern & Catchment Shock Treatment (100G)
Directions for cistern and catchment tank cleaning:
- Determine your total tank volume in gallons across the cistern or catchment tanks you plan to clean.
- Dose at 20 grams per 1,000 gallons of tank volume. The full 100 g package treats a single 5,000-gallon cistern or multiple smaller rainwater storage tanks.
- Add the measured amount directly into tank water or into inflow as the tank fills.
- Allow at least 1 hour of contact time. For heavy organic buildup on tank surfaces, allow several hours until water clears.
- Skim off floating organic debris released from tank surfaces during treatment.
- Tank surfaces typically stay visibly cleaner for about one month. Then switch to our Cistern & Catchment Monthly Maintenance & Light Cleaner for ongoing cistern cleaning between Shock Treatments.
- Repeat the Shock Treatment only as needed. Regular monthly maintenance reduces how often a full cistern shock clean is required.
Quick Dose Guide - 100G Shock Treatment
|
Tank Volume |
Dose Required |
Package Used |
|---|---|---|
|
1,000 gallons |
20 g |
1/5 of 100g package |
|
2,500 gallons |
50 g |
1/2 of 100g package |
|
5,000 gallons |
100 g |
Full 100g package |
Key Benefits
- Treats 5,000 gallons (20 g per 1,000 gallons)
- Helps break down slime, organic film, and odor-causing residues
- HOCL-based Natural Oxidation Technology™ using NaDCC
- Works on tank surfaces, roofs, and gutters feeding your system
- Eco-friendly & septic-friendly, breaks down into salts and water
- Designed to be used with Monthly Maintenance & Light Cleaner
How It Works
When added to water, the formula generates hypochlorous acid (HOCL)—a powerful oxidizing molecule that reacts with organic contaminants such as proteins, fats, and sulfur compounds. This reaction helps lift buildup from surfaces and neutralize odors, leaving your system visibly cleaner.
Important Note
This product is not NSF 60 Certified and not EPA registered.
It is sold as a cistern and catchment tank cleaner, not as a disinfectant or sanitizer.
Safety and Usage Information
Safety and Usage Information
Solutions HOCL™ Cistern & Catchment Bomb™ Shock Treatment + Hea...
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Made In
Heavy-Duty Cleaning for Cistern and Catchment Tanks
Shock-treat your cistern or catchment tank with HOCL-Based Natural Oxidation Technology™. Our granular formula is designed to help lift organic film, break down slime buildup, and neutralize odor-causing residues on tank surfaces making it easier to maintain cleaner tank over time.
Use as your initial deep clean, then follow with our Monthly Maintenance & Light Cleaner to help keep buildup from returning.
How HOCL-Based Natural Oxidation Technology™ Works on Organic Buildup
Organic compounds commonly found in tanks:
- Proteins (from leaf litter, insects, bird droppings)
- Fatty acids (from environmental runoff)
- Amines (from decaying organic matter)
- Sulfur compounds (from decomposing natural material)
What Happens If Not Neutralized:
When these organic compounds accumulate in stored water tanks, they can cause visible slime and biofilm on tank surfaces, unpleasant odors, and discoloration — making regular tank cleaning an important part of maintaining stored water systems.
Product Benefits:
- Helps break down organic film and slime buildup on tank surfaces and tank components
- Designed to reduce how often heavy-duty deep cleaning is needed when used with Monthly Maintenance & Light Cleaner
- Helps reduce odor-causing organic residues in cistern and catchment tank systems
4 Easy Steps to Clean Your Tank
1
DETERMINE YOUR TANK VOLUME
Calculate total gallons across the Cistern or Catchment tank(s) you plan to treat
2
MEASURE & ADD
Dose at 20 g per 1,000 gallons. Add directly into tank water or into inflow as the tank fills
3
ALLOW CONTACT TIME
Allow at least 1 hour; for heavier buildup, leave several hours until water clears. Skim off any floating debris released from surfaces
4
FOLLOW UP MONTHLY
Tank surfaces typically stay visibly cleaner for about a month. Then use our Monthly Maintenance & Light Cleaner between Shock Treatments
HOCL-Based Cleaning for Cisterns & Rainwater Catchment Systems
The SolutionsHOCL™ Cistern & Catchment Shock Treatment uses HOCL-Based Natural Oxidation Technology™. Hypochlorous acid (HOCL), generated from NaDCC (sodium dichloroisocyanurate), acts as an oxidizer that breaks down organic film, slime, proteins, fatty acids, and sulfur compounds that accumulate on tank surfaces and in stored water systems. After use, the active ingredient converts primarily into salts and water, reducing chemical residue in your system.
This product is not NSF 60 Certified and is not EPA registered. It is sold as a cistern and catchment water tank cleaner, not as an EPA-registered disinfectant or sanitizer.
Designed for Cistern and Catchment Tank Cleaning
Hypochlorous acid (HOCL) is widely studied for its properties as an oxidizing compound in cleaning and environmental surface applications. Our SolutionsHOCL™ formulas use HOCL chemistry — visit our Scientific Studies page to explore the published research on hypochlorous acid and its role in cleaning applications.
Why Tank Cleaners Love It
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No Scrubbing Needed
The granular formula does the heavy lifting on organic film and slime — simply measure, add, and allow contact time
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Designed for Ongoing Use
Pair with our Monthly Maintenance & Light Cleaner to help reduce buildup between Shock Treatments
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Tank-Compatible Formula
Suitable for use in most cistern and catchment tank materials, including plastic, concrete, and metal tanks. Not for aquatic systems
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Eco-Friendly Chemistry
The active ingredient converts primarily into salts and water after use — no harsh chemical residue left behind
SolutionsHOCL™ Cleaning Formulas
Our cleaning formulas feature Hypochlorous Acid (HOCL) as a key component. HOCL acts as an oxidizing compound that breaks down organic film, slime, and odor-causing residues through oxidation. Explore a curated selection of studies from reputable sources to enhance your understanding of HOCL's properties and effectiveness. Please note, these studies are for informational purposes only and explain how HOCL works in a range of cleaning applications. Visit our Scientific Studies page for references.
Our SolutionsHOCL™ products are formulated with eco-conscious ingredients. This product is in the process of being submitted for EPA review, although not yet complete. Please review our full line of Home Healthy™ Cleaning Products.
Frequently Asked Questions
Q: What is HOCL and How Does It Function as a Water Tank Cleaner?
Q: What is HOCL and How Does It Function as a Water Tank Cleaner?
Hypochlorous acid (HOCL) is an oxidizing compound generated when NaDCC (sodium dichloroisocyanurate) dissolves in water. As an oxidizer, HOCL breaks down organic matter — including proteins, fatty acids, amines, and sulfur compounds — that accumulate as slime and organic film on cistern and catchment tank surfaces. It is widely studied in cleaning and environmental surface applications. This product is not NSF 60 Certified and is not EPA registered; it is sold as a cistern and catchment tank cleaner only.
Q: What exactly is the Cistern & Catchment Shock Treatment?
Q: What exactly is the Cistern & Catchment Shock Treatment?
The Cistern & Catchment Shock Treatment is a heavy-duty granular tank cleaner designed for cistern and catchment water storage systems. It uses HOCL-Based Natural Oxidation Technology™ to help lift organic film, slime, and odor-causing residues from tank surfaces. The 100 g size treats up to 5,000 gallons; the 500 g value size treats up to 25,000 gallons at the same dose rate of 20 g per 1,000 gallons.
Q: Is this product safe for drinking water systems?
Q: Is this product safe for drinking water systems?
While we’re not certified by the EPA or FDA, this product is formulated with safe, food-grade ingredients commonly used in water treatment. It’s designed for systems where water is filtered and purified after storage. Always follow your local health guidelines and filtration processes if using water for consumption.
Q: How often should I use the Cistern & Catchment Shock Treatment?
Q: How often should I use the Cistern & Catchment Shock Treatment?
Use the Shock Treatment as needed for heavy-duty cleaning — typically when you notice significant slime buildup, odor, or discoloration in your tank. After your initial Shock Treatment, use our Monthly Maintenance & Light Cleaner once per month to help slow organic buildup from returning. Regular monthly maintenance reduces how often you need to shock treat.
Q: Will it damage my tank or plumbing system?
Q: Will it damage my tank or plumbing system?
The Shock Treatment is designed for use in cistern and catchment water tank systems, including plastic, concrete, and metal tanks. Do not use in ponds, aquariums, or any system with aquatic life — this product is toxic to aquatic organisms. Always follow dosing instructions and store separately from acids, ammonia, and other cleaning chemicals.
Q: Do I need to scrub or rinse my tank after use?
Q: Do I need to scrub or rinse my tank after use?
No scrubbing is required. Add the measured dose directly into your tank water or into inflow as the tank fills. Allow at least 1 hour of contact time (longer for heavier buildup). After treatment, skim off any floating debris that has been released from tank surfaces during treatment.
Q: Is it safe for the environment?
Q: Is it safe for the environment?
After reaction, the active ingredient converts primarily into salts and water, reducing chemical residue in your system. The formula is eco-friendly and septic-friendly. Do not dispose of large quantities into drains or waterways, and follow local regulations for product and container disposal.
Q: Will this help eliminate odors from my water?
Q: Will this help eliminate odors from my water?
The Shock Treatment is designed to break down odor-causing organic residues — including sulfur compounds, amines, and other organic matter — that accumulate on tank surfaces and contribute to unpleasant tank odors. After treatment, use our Monthly Maintenance & Light Cleaner monthly to help keep odor-causing buildup from returning between Shock Treatments.
Q: Does this product expire?
Q: Does this product expire?
Store in a cool, dry, well-ventilated place below 30°C (86°F), tightly closed and protected from moisture. When stored as directed, the product is typically suitable for extended storage. Check your packaging for best-by or lot information.
Q: How does SolutionsHOCL™ clean up your Cistern or Catchment Tank?
Q: How does SolutionsHOCL™ clean up your Cistern or Catchment Tank?
NaDCC dissolves in tank water and generates hypochlorous acid (HOCL), which acts as an oxidizer on organic film, slime, and residues on tank surfaces. The active compound breaks down proteins, fatty acids, amines, and sulfur compounds — the organic matter responsible for slime, cloudiness, and odor in stored water tanks. After the reaction, the active ingredient converts primarily into salts and water.
