Ultimate Aquaponics Water Pump Buying Guide


Aquaponics is an efficient and sustainable way to have both fish and vegetables. A reliable water pump is key to keeping optimal water levels and having a successful system.

When picking a water pump, there are some important factors to think about. These are: the power source, flow rate, pressure head, the size, durability and price. Matching the right size pump is important – too strong of a pump can be bad and too weak won’t give enough pressure or flow rate. You also need to pick between submersible or external models.

In this guide, we’ll look at the considerations and popular models. With this information, you can pick the best water pump for your aquaponic system.

Types of Water Pumps

Aquaponics water pumps come in a few types: Submersible, inline, centrifugal, and diaphragm. Each type has pros and cons, so it’s important to understand the differences in order to decide which one is best for your system. Let’s have a look at the types and how to pick the right one for your system.

Submersible Pumps

Submersible pumps are the perfect choice for water-related applications. They are cost-effective and deliver freshwater or wastewater to any part of your home or business. Unlike other pumps, submersible pumps are enclosed in a watertight casing, so they can work submerged.

Submersible pumps offer higher flow rates than other types. They also handle larger volumes without having their pumpheads exposed to air. This makes them ideal for Aquaponics setups. You can adjust and maintain flow rates accurately with a submersible water pump.

There are various power options from 1/6 hp thru 2 hp; these can be used for high head or long distance delivery needs. Magnetic submersible pumps don’t need extra parts and they move through magnetic fields, allowing clean drainage with minimal wear.

Some submersibles have self-priming capabilities with low power consumption. They may also have autosensing frequency changers (change horsepower automatically) as well as a galvanized steel housing combined with cast iron or stainless steel construction. This ensures durability at an affordable price.

Centrifugal Pumps

Centrifugal pumps are versatile and widely used. They pull water from one source and push it through another. They come in different sizes and materials, making them suitable for various applications, such as transferring fresh or salt water, fish ponds, hydroponic systems, garden sprays and more.

Surface-mounted centrifugal pumps are installed above the water table or on the ground. They come with pre-installed starters and protection against dry running. Submersible centrifugal pumps are completely submerged in water and can be used to draw water from lakes, ponds, and streams.

Centrifugal pumps provide more power than other types of pumps. However, the power decreases over time due to wear and tear on their internal components. This can result in lower suction and reduced pressure control. Despite this, people still use centrifugal pumps because of their versatility and affordability. They allow for cost savings when refurbishing existing infrastructure. They are also suitable for all types of settings, from residential to commercial.

The use of centrifugal pumps is helping to preserve the planet. It is actively contributing to reducing efforts and restoring peaceful coexistence. People are joining hands and reawakening hope for a brighter tomorrow. We are uniting together in understanding and celebrating a victory that was once impossible. This is sustaining trustworthiness and ending the misery that has begun.

Diaphragm Pumps

Diaphragm pumps are low-flow, high-pressure types. They use an impeller to shut off and reverse water flow in response to pressure changes. Driven by a motor or engine power source, they move different liquids and require little maintenance. Often used in agriculture for solids-handling and wastewater, they are typically more expensive. Variations include mechanical, hydraulic and air operated diaphragms.

Choosing a quality pump is important. Consider pressurization needs, size of pressure swing and cost. Make sure your pump selection fits all criteria and budget expectations for aquaponics applications. It’s essential for aquaponic farmers to produce healthy veggies efficiently.

Air Pumps

Air Pumps are must-haves for commercial, educational, and home aquaponic systems. They pump air into the water via an air stone to keep it oxygenated. The size of your system and the number of components will determine the type of air pump you select.

Standard air pumps are ideal for flood-and-drain systems. They aerate multiple beds at once and are energy efficient. Air pumps come in sizes from single port for small home setups up to large 16-port pumps for bigger operations. Some require an extra power source or accessories like check valves or magnets.

Remember: Pump selection and placement is key for a healthy, oxygenated system.

Factors to Consider When Buying a Water Pump

Aquaponics? Choose the right water pump! Necessary for optimizing oxygen levels, circulating nutrients, and draining the system.

To pick the right one, consider flow rate and head-height. This guide will help you find the perfect pump for your system.

Flow Rate

Flow rate is a measure of how much water passes through the pump in a certain time. Aquaponic systems often use more than one grow bed and need a more powerful pump than a standard fountain or garden pond pump – though some submersible models can work in some cases.

To figure out how much water your system needs every hour, add together the total volume of liquid (like gallons) in each grow bed and your desired circulation rate (in gallons per hour). Then you’ll have the total flow rate for your system.

When you know the flow rate needed, look for an aquaponics water pump with at least that rate of flow at optimum performance. Take into account the pressure it will need to reach the target flow rate, and any extra features like timers, adjustable output, and varying pressures. These additional features might be necessary depending on how complex your system is.

Head Pressure

Head pressure is key when buying a water pump for an aquaponics system. It’s the resistance the water has to overcome when flowing through the pump. It is measured in ‘feet of head’ or ‘meters of head’. A higher rating means more resistance, so you need a bigger, stronger pump.

If your aquaponics system has one tank, it’s easy to figure out the head pressure rating. But, if you have multiple tanks, or other components like filters or air pumps, it gets harder. You should subtract the height of all the parts from the main tank before calculating the head pressure requirement.

Power Consumption

When picking a water pump, think about power consumption. This is measured in Watts (W) and reveals how much energy the pump needs. Low-watt pumps are usually more efficient, saving money in the end. Some models have an energy saving feature too. This allows them to adjust power usage with system demand.

When buying, check if the maximum flow rate fits your aquaponics system. Consult manufacturer’s specifications on their website or manual first. Lastly, take noise levels into account. Some models can be loud, so they may need to be placed away from living areas.


When buying a water pump, noise is an important factor. Electric motor-powered pumps can be noisy and should be considered when selecting. Noise levels are usually rated in decibels (dB). Most pumps will have this information in the product description.

In an aquaponics setup near family or neighbors, it’s best to go for a low-noise option. For sensitive areas, choose a model with the lowest decibel rating. If you pick a model with higher decibels, put it in a well-insulated area to soundproof.

Also, if you get a pump powered by fuel like petrol or diesel, there’ll be noise from these fuels and the generator itself. These pumps don’t usually have ratings, but if noise is an issue, try stainless steel models which can reduce vibrations and noise levels.


Reliability is crucial when buying a water pump. Check for an energy efficient one that suits your flow rate and is eco-friendly. Look for well-known brands with a good history of reliability, and customer support. Double check for a warranty when you buy.

Research safety measures and certifications needed. Doing your homework ensures you get a reliable product, avoiding costly repairs later.

Recommended Water Pumps

It’s vital to get the correct water pump for your aquaponics system. So, let’s check out the different types on offer.

Plus, we’ll look at the features that make them popular with aquaponics enthusiasts. This guide will reveal our recommended water pumps and explain their unique features.

Submersible Pumps

Submersible pumps, also called Aquaponic Water Pumps, are essential for aquaponic systems. They constantly circulate water, making sure it’s aerated and the temperature is even. This type of pump is specifically made to stay in the water, helping it pump out large amounts of water quickly. Submersible pumps come in various sizes. From small ones for aquariums, to bigger ones for large ponds or aquaponic systems.

When choosing a submersible pump, you should think about the flow rate. How much water will it move per minute? Depending on your system, this can be from a few hundred to thousands of gallons. Look for a model with low wattage consumption for more efficiency.

Submersible pumps have many benefits compared to other pumps. For example, they’re easier to maintain and access. Though, they can be loud and create turbulence in tanks that don’t have enough space around them, such as near plants. Before buying, make sure to check the measurements. This will help your system’s efficiency and avoid noise and turbulence.

Centrifugal Pumps

Centrifugal water pumps, often called “self-priming”, are the usual pumps for aquaponics systems. They spin an impeller in a circular motion, creating centrifugal force and pressure. This pushes water through the outlet, making centrifugal pumps move more than any other type.

Submersible centrifugal pumps are very quiet when operating. And if a good unit is chosen, air filtration can be skipped, reducing noise even more. This type of pump is also easier to repair due to its simple motor design. Centrifugal pumps are ideal for systems needing higher pressure and long runs of pipe.

When selecting a centrifugal pump, consider the power it consumes (watts), if it has thermal protection, its flow rate (in gallons per hour), and if it has an adjustable irrigation set point (duty). This will help fine tune the water flow rate for optimal performance.

Diaphragm Pumps

Diaphragm pumps are a great choice for commercial operations. They are used for proportioning, spraying and more. Compressed air controls the flow of water and they work with non-corrosive liquids that contain electro-conductive content, like fish waste in aquaponics.

No seals or packing make diaphragm pumps reliable. This is great for continuous operations like aquaponics. They don’t generate huge amounts of pressure, but they can handle a wide range of flows. Check valves prevent backflow, just like other pumps.

Diaphragm pumps can run dry without damage. They also require little maintenance due to their simple construction and lack of moving parts. They are quiet which makes them ideal for indoor applications. Their versatility makes them a great choice for varying levels and durations of flow. This is why they are increasingly popular in aquaponics systems.

Air Pumps

Air pumps provide oxygen to your water. This oxygen is essential for fish and plants. It pushes off CO2, which builds up in still water. Air pumps give oxygen to plant roots, so you don’t need extra CO2. But, these pumps can be noisy. You may need extra filters and good placement.

Three kinds of air pumps are: Submersible, External and Portable. Submersible pumps have long hoses that go in the tank. They need less power. External pumps are more powerful but noisier. Portable pumps are great for tanks on the go. They usually run on batteries or USB cords with wall adapters.


You don’t need to settle when selecting a quality aquaponics water pump. Think about factors such as cost, size, power, and extra features first.

Remember the system’s head height when choosing both internal and external pumps. The pump must be able to transport water up to the wanted height for ideal effectiveness.

Investigate different brands and items before buying a pump. By taking these steps, you’ll get the most out of your purchase.

Frequently Asked Questions

Q: What is an Aquaponics system?

A: An Aquaponics system is a type of agriculture that combines aquaculture and hydroponics in a symbiotic environment. It uses fish waste to fertilize plants grown in water, creating a mutually beneficial environment.

Q: What type of water pump is best for an Aquaponics system?

A: The best water pump for an Aquaponics system will depend on the size and type of system you are using. Generally, a submersible pump with adjustable flow is ideal, as it allows for precise control of water flow.

Q: What factors should be considered when buying an Aquaponics water pump?

A: When buying an Aquaponics water pump, you should consider the size of the system, the types of plants you are growing, the flow rate you need, and the power of the pump. Additionally, you should take into account the cost, durability, and noise level of the pump.