Over time, sediment, sludge, and organic matter build up in the bottom of your water tank. It can make your water look, taste, and even smell bad. Even clear-looking rainwater regularly contains unhealthy bacterial contaminants such as E.coli, Giardia, and Cryptosporidium. As rainwater experts serving Waiheke Island we have compiled a list of our most popular FAQs on our water tank cleaning service. How frequently does a water tank require cleaning? Typically every two to three years, though adding a pre-tank filtration system can stretch that out to five years or more. Every property has unique conditions that impact how quickly debris builds up. Key factors include; nearby trees & leaf litter, your roof material, airborne dust from unsealed roads or nearby construction. Even prevailing wind patterns in your area can have a negative effect on your water quality. Will you need to drain my tank to clean it? No, you keep most of your water. Our process only requires around 20–30 cm of water at the base to vacuum out sludge and sediment. Once the debris is removed, we filter and sanitize the remaining water—saving you precious supply, especially during dry summer months. What time of year is best for a tank clean? We operate all year round, however, the process works best when the tank is at least one-third full, as higher water pressure improves suction. As long as there is a minimum of 40 cm of water left at the bottom, we can complete the job smoothly. Does someone physically enter the tank? Rarely these days. To prevent introducing outside contaminants into your drinking supply, we perform almost all cleanings from the exterior. Note: Safe entry is occasionally required for underground or unusually complex tank configurations. Is water sanitization included? Yes, sanitization comes standard at no extra cost with every clean. If you prefer to opt out of the sanitization step, simply let us know when booking your service. How can I keep my tank cleaner between visits? Installing a pre-tank filter is the most effective line of defense. We can also help safeguard your supply by: Sealing gaps and penetrations in the tank Repairing damaged pipes and gutters Replacing broken concrete or plastic access covers Need to know more or wanting to book in? Speak to Marco via the phone or in person, be sure to ask him about our current deals. You can also follow us on @tankmannz and visit our website. (09) 372 7270 116 Ostend Road (next to Waiheke Workout) www.tankman.co.nz Book a service at www.tankman.co.nz/book

For Waiheke Island homes, rural properties and high-capacity rainwater storage needs ( 25-100,000 litres+) , a timber tank is a smart, sustainable and practical choice. Many Waiheke sites are sloped, remote or difficult to access, making large plastic or concrete tank delivery challenging. Timber tanks are assembled onsite in their permanent position, allowing components to be carried into tighter locations with less disruption to the natural landscape. Made from treated pine and built with a protective food grade liner, the water does not touch the wood, helping keep drinking water fresh while maintaining a more eco-friendly structure. Timber also provides natural thermal insulation, helping reduce temperature fluctuations that can affect stored rainwater. Sustainability is another major advantage. Around one tonne of milled timber can hold approximately 1.7 tonnes of atmospheric CO2, or a 30,000 litre wooden tank structure holds 4.5 tonnes of atmospheric carbon. making timber tanks a lower-impact option. While more expensive than plastic tanks, for lifestyle blocks, larger homes, rural sites or fire water storage, timber tanks offer strength, capacity and a naturally beautiful finish. As Waiheke Island's rainwater system experts, we are here to help you find the right solution for your property. Pop into our showroom or pick up the phone today to find out more. Read more about Timber Tank advantages here. (09) 372 7270 116 Ostend Road, (next to Waiheke Workout) www.tankman.co.nz

Rainwater is naturally slightly acidic (usually a pH of around 5.6) because it absorbs carbon dioxide from the atmosphere, forming a weak carbonic acid. Concrete, on the other hand, is highly alkaline. It relies on calcium hydroxide (lime) to maintain its structural strength and integrity. When acidic water sits inside a concrete tank, a chemical reaction occurs: Lime Leaching: The acid in the water reacts with the calcium hydroxide in the concrete, neutralizing it and dissolving it into the water. Micro-cracking and Pitting: As the lime leaches out, the concrete becomes increasingly porous. The smooth internal surface begins to wear away, leading to pitting, rough patches, and tiny structural cracks. Structural Weakening: Over many years, if the water penetrates deep enough to reach the internal steel reinforcing mesh (rebar), the steel will begin to rust. Rust expands, causing the concrete to spall (flake or break away), which can eventually compromise the structural integrity of the tank. Signs of "Old Tank Syndrome" A gritty or sandy residue at the bottom of the tank (dissolving concrete). White, powdery deposits or tracking lines on the outside of the tank where water is weeping through structural cracks. Rough, exposed aggregate on the inside walls where the smooth cement paste has dissolved. How to Fix and Prevent It: You don't necessarily have to go through the massive expense and hassle of demolishing and replacing a very heavy concrete tank. Installing a Tank Liner: Installing a polyethelyne tank liner acts as a complete physical barrier. It stops the acidic water from ever touching the concrete again, effectively sealing existing leaks and halting the leaching process entirely. Tankman are experts at successfully installing liners to rescue leaking concrete tanks on Waiheke, having successfully installed 15 of these over the last year for Waiheke home owners. Give us a call to see how we can customise a solution for you. (Mention this blog in your booking process.) 09 372 7270 116 Ostend Road, (next to Waiheke Workout) www.tankman.co.nz - Book your tank clean digitally

Keep all the nasty bird dropping bacteria out of your house with water treatment filters, filter systems & UV purification. Quick View TEST KIT BACTERIA - Bacteria in Water Test Kit (Safe Home®) Price $50.00 Quick View Greenway - 10" Dual Filter Unit with UV Inc Installation Price $2,295.00 Quick View Greenway - 10" Triple Filter with UV (water with taste issues) inc Installation Price $2,695.00 Quick View Dual Filter Unit 10" - Twin Jumbo System (Price includes installation) Price $995.00 Quick View Greenway Ultra Violet Unit - UV System (GAUV-10S,(Price includes installation) Price $1,200.00 Quick View Puretec 10" Whole House Dual Filter + UV System+Installation Price $2,295.00 Quick View Puretec Hybrid G8 UV - Dual Filter 10" + UV Price $2,934.00 Quick View Puretec Maintenance Kit - Hybrid series HR-G8R3 Price $485.00 Quick View Puretec Maintenance Kit - Hybrid P series G13 + R11 (HR-G13R11P) Special Order Quick View Puretec Sediment Filter 10" 20mic - PP20LD1 Price $55.00 Quick View Puretec Sediment Filter 10" 1mic - MB01LD1 Price $40.00 Quick View Puretec Carbon Filter 10" 5 micron - EC05LD1 Price $92.00 Quick View Puretec Pleated Sediment Filter 20"- 20mic PP20LD2 Price $90.00 Quick View Puretec Melt Blown Sediment Filter 20" - 1 micron MB01LD2 Price $77.00 Quick View Puretec Carbon Filter 20" 5 micron - EC05LD2 Price $160.00 Quick View Puretec Tannin Reduction Cartridge, 20 inch - TR20MP2 Price $386.00 Quick View Puretec Z2 Puremix Inline Underbench Water Filter 1mic. Price $337.00 Quick View Puretec PureMix Z7 Underbench Water Filter Unit - 1 micron Price $482.00 Quick View Puretec PureMix Z6 Underbench Water Filter Unit - 0.1 micron Price $524.00 Quick View Puretec Underbench Filter Z2-R Puremix Quick Twist, 10" 1 Mic Price $165.00 Quick View Puretec Ultra Z Platinum Replacement Cartridge Z1-R 0.1 microns Special Order Quick View Puretec X7-R Underbench Filter, 1 micron - Puretec Quick Twist Special Order Quick View Puretec Underbench Filter Puremix Z6-R Replacement Cartridge 0.1 micron Price $249.00 Quick View Puretec Underbench Filter Puremix Z7-R Replacement Cartridge 1 micron Price $220.00 Water Filtration & Purification Protect your household water from contaminants, including bird dropping bacteria, with our advanced filter and UV sterilization solutions. Water Filters and UV sterilizers play a crucial role in maintaining water quality. We offer a wide range of water treatment solutions, including filters, filter systems, and UV purification systems. We provide a routine water filter and UV replacement service to ensure your water system remains in top condition, without you having to remember to change the filters, or service the unit. We come to your property and replace your filters and/or UV bulb on a regular cycle. Call us for details on 09 372 7270 . To choose the correct filtration &/or purification system for your needs, we'll ask you about your current water storage set up, your water pump set up, your family's size, water usage, and general filtration needs. All filter and UV intallations are completed by a certifing plumber. Frequently Asked Questions How do I choose which filter is best for our needs? How often will I have to change the filters? Can I change the filters & UV bulb myself? Yes, you can change the filters and bulbs yourself, or you can have us come out and do it for you (on a schedule if you don't want to worry about letting them get too old. Here's a video showing how to replace water filters. Whenever there is a drop in pressure, or one year has passed, whichever comes first. It's best to contact us to discuss your options. We'll go through considerations such as your water sources, your water usage, and details about your property's structure to determine which filtration system or purification system will suit your needs best. Water Purification & Filtration Information Downloads. Water collection tanks & safe household water by the Ministry of Health NZ (1.4MB)

TankOzone Ozone Water Sterilisation System Flush by TANKMAN Tank & Pump Shop Waiheke Chemical Free Tank Water Purification TANKMAN'S Ozone system flush will treat, condition and filter the entire contents of your water tank, without using chemicals or draining your tank. The Ozone filtration process will take 48 hours, but unlike chemical sterilisers, you can continue to safely use your house water as normal through the process. What's the quality of the water stored in your tank? Is your tap water brown or murky? Does your drinking water taste foul or musty? Rotting leaves could cause this in your water tank. If your tap water tastes bad or smells foul, there are pollutants, bacteria or other contaminants in the water tank and, thus potentially in your drinking water. Roof water often contains faecal and urine deposits from birds, possums, rodents and tannins from decaying organic matter. Ozone kills coliform bacteria such as E.coli on contact more effectively than chemicals. Additionally, it treats fungus, mould and yeast spores. Spray drift in agricultural areas also poses a severe risk to roof or groundwater – potentially contaminating these with pesticides and glyphosate. For this purpose, ozone is very effective in neutralising these contaminants – a particular benefit to people with compromised immunity. TANKMANS Ozone system flush will treat, condition and filter the entire contents of your water tank, without using chemicals or draining your tank. Book Now How does ozone purify water? Ozone is oxygen (O) with three atoms (O3) instead of two atoms (O2). Therefore, it consists of three oxygen atoms, “O3”, with a high oxidation potential. In chemistry, this property means that the gas is particularly “reactive”. This is because its third atom “steals” an oxygen atom from everything that comes into contact with ozone. Thus, ozone is one of the strongest oxidants of all and is used in water treatment worldwide. Since it is not water-soluble, ozone reacts with the pollutants in the water. This process is called ozonation.The oxidation process destroys unwanted contaminants such as viruses, bacteria or other pathogens by causing the disintegration of their cell membrane. Ozone binds toxic componentsAlthough its oxidative properties are powerful, the lifetime of ozone is very short. As soon as it comes into contact with viruses, bacteria, odours, these are destroyed by the extra oxygen atom in the ozone!During ozone water treatment, the cellular components of the bacterial cell walls of all harmful substances in the environment are oxidised. As soon as the ozone has reached the individual cells, it oxidises all components – what remains is pure oxygen. As the ozone bubbles ascend through the wa ter in the tank, they continue the ozone saturation process. The Tankozone system then filters oxidised material. What remains is healthy, clean drinking water, ideal for all your domestic water uses. Thereby, the electricity costs are only about $7.50 per month. Ozonation protects you and your family against virtually all toxic and harmful unwanted bacteria, germs, viruses, fungi and protozoa. SPECIAL SPRING OFFER OPTION 1: 48 Hour Large Tank Ozone Purification and Filtration Flush $395 OPTION 2: (For VERY dirty tanks) Tank bottom sludge vacuum followed by 48 Hour Large Tank Ozone Purification & filtration Flush $695 includes gst Book Now Book Your Tank Water Treatment Now

Select your Bayley's Water Tank and your prefered delivery time for installation with our online scheduler. Please note - we only operate on Waiheke Island