7 Supplies for Converting a Stock Tank to a Pool
Creating a stock tank pool requires more than just water. This guide covers the 7 essential supplies, from a filter pump to the necessary plumbing and sealant.
That galvanized steel stock tank sitting in the feed store isn’t just for watering livestock; it’s the foundation for the best backyard addition you’ll ever build. But turning a simple farm trough into a refreshing oasis requires more than just a garden hose and wishful thinking. The right set of supplies makes the difference between a leaky headache and a perfect summer cool-down spot.
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Planning Your DIY Stock Tank Pool Project
Before a single tool comes out, the most critical work happens on paper and in your yard. The first decision is location. You need a perfectly level spot that can support the immense weight of the tank filled with water—an 8-foot tank holds over 700 gallons, weighing nearly 6,000 pounds. A poorly prepared base of sand or crushed stone is a recipe for a warped tank and a lopsided pool.
Next, consider your power source. The filter pump will need a GFCI-protected (Ground Fault Circuit Interrupter) outlet to operate safely. Running extension cords across the lawn long-term is not a safe or sustainable solution, so plan your pool’s placement with a permanent, weatherproof electrical source in mind. Finally, map out your plumbing. Know where the inlet and outlet holes will go, how the hoses will run, and where the pump will sit to ensure everything is accessible for maintenance without being a tripping hazard.
Stock Tank – CountyLine Round Galvanized Stock Tank
The tank is the heart of the project, and you can’t go wrong with a classic. The CountyLine Round Galvanized Stock Tank is the go-to choice for a reason: it’s built for the rigors of farm life, meaning it can handle being a pool. Its heavy-duty G90 galvanized steel construction resists rust and corrosion, while the rounded design eliminates sharp corners, making it safer for swimming.
This tank is the right pick because it’s readily available at most farm supply stores and comes in various sizes, with the 8-foot diameter model being the most popular for small pools. It’s deep enough for adults to sit and cool off but shallow enough to be manageable. Before you buy, inspect it for any shipping dents or dings, especially around the bottom seam. While it’s built to last, a significant dent can compromise its integrity over time. This is a simple, no-frills foundation—perfect for a DIY project where reliability trumps fancy features.
Filter Pump – Intex Krystal Clear Cartridge Pump
A stock tank pool without a filter is just a large, stagnant tub of water. A filter pump is non-negotiable for circulating water and keeping it clean. The Intex Krystal Clear Cartridge Filter Pump is the standard for above-ground pools for a reason: it offers the perfect balance of performance, price, and simplicity for the water volume of a typical stock tank.
The 1000 GPH (gallons per hour) model is a solid match for an 8-foot tank, capable of turning over the entire volume of water in just a few hours. It’s a plug-and-play system that’s easy for beginners to set up and operate. The main consideration is that it uses disposable cartridges that need to be rinsed every week and replaced every 2-4 weeks, so stock up on those. This pump is ideal for anyone who wants a straightforward, effective filtering solution without the complexity and cost of a larger sand filter system.
Plunger Valves – Intex Replacement Plunger Valves
Plunger valves are small parts that play a huge role. Installed on the inside of your tank at the inlet and outlet ports, these valves allow you to completely stop the flow of water to and from the pump. This is absolutely essential for any kind of maintenance, like cleaning the pump’s filter cartridge or replacing a hose, without draining the entire pool.
These specific Intex valves are designed to work seamlessly with the Intex pump hoses, ensuring a leak-free, screw-on connection. They operate with a simple push-pull motion, making them foolproof. When installing, ensure you have a good seal against the tank wall. Forgetting these valves is a common rookie mistake that turns a 5-minute filter change into a major, pool-draining headache. They are an inexpensive upgrade that adds immense practicality to your setup.
Marine Sealant – 3M 5200 Fast Cure Sealant
When you cut holes in a metal tank designed to hold water, you need a sealant you can trust completely. This is not the place to cut corners with basic silicone. 3M 5200 Fast Cure Marine Adhesive Sealant is the only choice; it creates a tough, flexible, and completely waterproof bond that is permanent. It’s designed to withstand constant submersion and the harsh conditions of a marine environment, making it more than capable for a stock tank pool.
The "Fast Cure" version is key, as it becomes tack-free in about an hour and fully cures in 24 hours, letting you get your project finished sooner. Apply a generous bead to every surface that will contact water: around the threads of your inlet/outlet ports, on both sides of the rubber gaskets, and under the flange of the fittings. Be warned: this stuff is permanent. Once cured, it’s not coming off without a fight, so make sure everything is placed correctly the first time.
Tips for Cutting and Sealing Your Tank Holes
Cutting into your brand-new stock tank is the most nerve-wracking part of the build, but with the right technique, it’s straightforward. Use a high-quality bimetal hole saw attached to a powerful drill. The size of the hole saw must precisely match the outer diameter of the threaded portion of your pool fittings. Measure three times, mark your spot clearly, and then cut once. Start the drill slowly to create a groove, then increase speed, applying firm, steady pressure.
Once the hole is cut, the edge will be sharp. Use a metal file or a deburring tool to smooth it down completely. A sharp edge can slice your rubber gaskets and cause a slow, persistent leak that’s a nightmare to fix later. When applying the 3M 5200 sealant, be liberal. Apply it to the tank wall around the hole, on the fitting’s flange, and on both sides of the gasket. As you tighten the fitting, the sealant should squeeze out evenly around the entire perimeter—that’s how you know you have a good seal. Wipe away the excess for a clean look before it cures.
Chlorine Dispenser – U.S. Pool Supply Floating Dispenser
Keeping your pool water sanitized is crucial for health and safety, and a simple floating dispenser is the easiest way to manage it. The U.S. Pool Supply Floating Chlorine Dispenser is a workhorse. It’s a simple, durable plastic device that holds 1-inch or 3-inch chlorine tablets and slowly releases sanitizer into the water as it floats around the pool.
What makes this a good pick is its simplicity and adjustability. It features an adjustable control ring at the base, allowing you to regulate the amount of chlorine being dissolved to match your pool’s needs. You can open it for more output after a heavy rain or close it down when the pool is covered. It’s a set-and-forget tool that does its job without any wiring or complex parts. This is perfect for the low-maintenance vibe of a stock tank pool, providing consistent chlorination with minimal effort.
Pool Skimmer – Intex Basic Pool Maintenance Kit
Leaves, bugs, and other debris will inevitably find their way into your pool. A hand skimmer is your first line of defense in keeping the water clean and inviting. The Intex Basic Pool Maintenance Kit is an excellent value, providing the essential tools you need without any unnecessary extras. It’s a lightweight, easy-to-handle solution perfectly scaled for a stock tank.
The kit typically includes a 94-inch telescoping aluminum pole, an interchangeable skimmer head, and a vacuum head. The skimmer net is durable enough for scooping out leaves and insects, while the vacuum head (which attaches to a garden hose) is surprisingly effective for sucking up small debris that settles on the bottom. For a stock tank, you don’t need a complex, expensive automatic cleaner. This simple, manual kit is all you need to keep your water sparkling in just a few minutes a day.
Pool Cover – Intex Round Solar Pool Cover
A pool cover is a multi-purpose tool that is well worth the small investment. It keeps leaves, pollen, and other debris out of the water, drastically reducing your cleaning time and the strain on your filter pump. The Intex Round Solar Pool Cover does this and more. It’s essentially a heavy-duty sheet of bubble wrap that floats on the surface of the water.
The primary advantage of a solar cover is its ability to trap heat from the sun, warming the water by several degrees and extending your swimming season. It also significantly reduces water evaporation, saving you water and money. When buying, choose a size slightly larger than your tank’s diameter—for an 8-foot tank, a 10-foot cover works well. You can then easily trim it with scissors for a perfect, edge-to-edge fit. This is an essential piece of gear for anyone who wants warmer water and less daily maintenance.
Maintaining Water Clarity and Chemical Balance
A filter pump and a chlorine floater are the foundation of clean water, but they aren’t the whole story. To prevent algae growth and ensure the water is safe, you need to perform basic water testing. Simple test strips can measure key levels like pH, alkalinity, and chlorine. These factors work together: if your pH is too high or too low, the chlorine won’t be effective, even if the dispenser is full.
Aim to test the water at least twice a week, and more often after heavy use or a rainstorm. You can buy basic pool chemicals like "pH Up" or "pH Down" at any hardware or pool supply store to make small adjustments. Keeping these levels balanced is far easier than trying to fix a cloudy, green pool. Think of it as preventative maintenance—a few minutes a week saves you a major clean-up job later.
Essential Safety for Your Stock Tank Pool
While a stock tank pool is fun, it’s still a body of water that demands respect. Safety should be your top priority, especially if children will be using the pool. Local regulations for residential pools may apply even to a stock tank, so check your municipal codes regarding fencing and gate requirements. A secure, self-latching gate is the most effective safety measure you can install.
Electrical safety around the pump is also critical. Ensure the pump is plugged into a GFCI-protected outlet, which will automatically shut off power if it detects a fault, preventing electric shock. Keep all electrical cords and connections out of puddles and away from foot traffic. Finally, never leave children unattended in or around the pool, not even for a moment. Establish clear rules for pool use and ensure everyone understands them.
Winterizing and Storing Your Pool Setup
As the swimming season ends, properly winterizing your setup will protect your investment and make next year’s opening much easier. If you live in a climate where temperatures drop below freezing, you absolutely must drain the tank. Water freezing inside the tank can expand and split the seams or warp the metal walls, causing irreparable damage.
Disconnect the pump and all hoses. Drain them completely and allow them to dry out before storing them indoors in a shed or garage to prevent the plastic from cracking in the cold. The stock tank itself is designed to live outdoors, so it can be left in place once it’s empty and dry. Some people choose to flip it upside down to prevent it from collecting snow and ice. A little bit of work in the fall ensures your equipment will be in perfect condition and ready to go as soon as warm weather returns.
With the right components and a bit of careful work, a humble livestock tank transforms into a durable, stylish, and wonderfully refreshing backyard pool. By focusing on reliable, purpose-built parts for filtering, sealing, and maintenance, you create a system that works together seamlessly. The result is less time troubleshooting and more time enjoying the cool water on a hot day.
