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The Importance Of Circulation In Your Pool

The importance of circuation in your pool

The importance of circuation in your pool

The Importance Of Circulation In Your Pool

When something is just not quite right in your pool or it looks cloudy, it is often recommended to clean your pool manually. When that doesn’t solve the issue and it keeps reoccurring, the next common step is to check your pool equipment.

But – what if you are looking in totally the wrong direction for a solution?

What if we tell you that 8 out of 10 times, it is not the pool equipment that is letting you down, but the water flow in your pool.

The key to a clean and healthy pool is good circulation of the pool water.

Your filter is designed to clean the water, but it can only clean water that actually passes through it. A lack of circulation will allow dirt to settle in a areas of your pool that will eventually affect the overall cleanliness and clarity of your pool water. To make sure all the water in your pool gets filtered, you will need good circulation in your pool – so clean water circulates correctly and dirty water is passed through the filter.

Good circulation will not only decrease the amount of pool cleaning you will have to do, it will also decrease the amount of chemicals and sanitiser needed. Your pool water will stay healthy and clean for longer and won’t need as much treatment as it would when there are dead spots in the pool where debris can accumulate. The water will also stay cooler with decent circulation.

Want to know what you can do yourself to improve the circulation in your pool? Keep reading and check out these tricks below to get the water flowing.

Check skimmer basket(s) and main drains

The first thing you will want to do is check whether all the skimmer baskets on your pool and the main drains are operating and pulling the water from your pool into the filtration system. How? Put your hand near (not too close) the suction part of the skimmer basket and drains to check whether they are pulling the water in.

Needless to say that skimmer basket(s) full of debris and leaves will affect the circulation in your pool. Make sure to keep them clean!

Check return lines

Your return lines or return jets are the outlets in your pool that bring the filtered water back into the pool. By aiming the return lines properly, you facilitate your pool water to circulate and prevent dirty water to stay in one place without going through the filter.

The goal is to try to circulate the water away from the skimmer basket (to prevent the clean water to go straight back into the filter) and towards the bottom of the pool to create optimum circulation of the pool water. In order to achieve that, you should angle all your return lines to either 7 or 4 o’clock, whichever is away from the skimmer basket (same angle for all return lines).

If you have return lines in your steps, make sure to angle at least one of them at the top step. Otherwise dirt will collect on the steps. Making sure there is proper circulation in this area will prevent this.

Check filter pressure

Your pool filter is a big part of the success of the circulation. A clean filter that operates at ‘normal/clean filter pressure’, will give you the best results. You can check the normal pressure of your filter by checking the pressure gauge after a fresh back wash or filter clean. When your pressure gauge goes to 50kPa above the “clean filter” pressure, it’s time to backwash or clean the filter.

Check filter O-rings

Every pool filter has a few O-rings that help seal the filter and prevent it from leaking or letting in air. There O-rings need to be lubricated and in good condition to guarantee this, especially the O-ring that you find in the pump lit. If your O-ring is cracked, you will need to buy a new one. You can check for cracks by bending it between your fingers. If it is not cracked or when you use a new O-ring apply an O-ring lube to optimise the seal and water pressure in the filter.

Limit use of suction type automatic pool cleaner

An automatic pool cleaner might seem like your best friend when it comes to pool maintenance and of course it makes things a lot easier. Be aware that permanently leaving the suction type pool cleaners in your pool will slow the water flow down. We recommend limiting the use of these pool cleaners to once or twice a week.

Brush dead spots

Now that you have checked the skimmer basket, drains, return lines and filter, you should be getting the optimal circulation for your pool with your current set up. Are you still experiencing dead spots in your pool? Brush these spots manually when your filter is running so the particles that you brush up will go through the filter before they get a chance to settle down again.


Limit 90-degree bends in pipework

The way the pipework has been set up, will also influence the water flow in your pool. If you are just installing a pool or reinstalling a filter or pool pump you should take the following into account:

When installing the pool filter and pool pump, make sure there are as few 90-degree bends in the pipework as possible. Preferably use 45-degree connectors where possible as these allow greater water flow and are not restrictive like multiple 90-degree pipe joiners.

For more tips on cleaning your pool, also check out our 11 steps to professional pool maintenance.

Happy swimming!

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Customer Reviews


Customer Reviews

Jenny T. (South East Queensland, QLD) 01/2021

Product Review
Our new bionizer pool is a game changer. After 12 years as a Learn to Swim Teacher it is a treat to spend time in our pool and not smell like chlorine. The Fresh Water Pool is always inviting.
We choose a bionizer pool system to avoid the use of chemicals. It is so wonderful to eliminate harsh chemicals from our pool maintenance routine.
The support team are always available and ever helpful with any query we have as new bionizer customers.
Our family of 4 children & 3 grandchildren, all mermaids, love the beautiful bionizer pool. They spend all day in there and never stingy eyes or chlorine smells.
So pleased we made the change!

Stephen English 10/2020

Google Review
We have just been through the third winter with our pool. In January we bought a pHBoss so we now have all three devices. The pHBoss is so good that I have not had to add anything to the pool apart from one dose of buffer since late January. A completely automatic pool! Fantastic! A 31.5 degree pool and we swim in it nearly every morning around 7 am.

Gregory Peck 11/2020

Facebook Review
We highly recommend these products and this company for quality and excellent service. We have been investing in the Bionizer System for two years now and our pool has never looked better or clearer. The low maintenance required now has ensured it has already paid for itself. I am especially happy that we feel safe swimming regularly especially with my wife's medical condition and her rehab time required in pool. No more strong chlorine smell can only be a positive and good for you. You will be really happy. Do it

Joel 02/2021

Product Review
I use my pool every day summer and winter. I am running the Bionizer unit, Eco oxidiser and PH Boss -55,000L pool with glass filter. My pool has never look better since installing, I love that fresh water feeling. Keep your water balanced and let Bionizer do the rest, best investment I have made for our pool.

Paul H (South East Queensland, QLD) 03/2021

Product Review
When my saltwater chlorinator failed after only 3 years, and the second saltwater cell in 3 years failed at the same time, not surprisingly my pool went as green as your front lawn! I thought there has to be something better than this so I did some online research and stumbled across Bionizer's website. I thought this sounds to good to be true. I did lots of research and spoke to Brian whose knowledge about pool water is second to none! Although it was virtually double the price than replacing the saltwater chlorinator and cell, I was attracted by the claims of the virtual eradication of chemicals and significantly less pool pump use which saves in electricity costs. I was also attracted significantly to the claims around the quality of the water with no chemicals in it and the benefits to skin and health of swimming in what would apparently be like drinking water. I bit the bullet and bought the Bionizer complete with the Eco-oxidizer and the PH Boss.

It took about 2-3 weeks, around 50 litres of liquid chlorine, a couple of phone calls and lots of advice and guidance from Brian and a lot of consistent perseverance but we eventually got the pool water balanced and cleared and now it is crystal clear. The Bionizer was installed around mid January 2021 so for the last few weeks, the pool has been clear and looking wonderful. I have done next to nothing since except test copper levels each week and ensure the water remains balanced and that's it! I've not had to do anything else and the claims are true!!

As someone who suffers from chronic urticaria (hives) and other allergies, swimming in chlorinated water was doing nothing for my skin or allergies. Now I get out of the pool and my skin is not irritated. There is no more trademark tackiness of your skin that you get with chlorinated water. This system is simply fabulous!! I am delighted with the results and would strongly recommend it to anyone who wants to kiss goodbye to all those awful chemicals, the endless trips to the pool shop for water analysis, the ever increasing costs of all the chemicals and the hours spent labouring trying to keep your pool water from going green!

Do yourself and everyone who swims in your pool a huge favour and install the Bionizer system. I'm sure you will conclude it will be one of the best decisions you ever made!!!

Robert Rovere 12/2020

Google Review
We first bought a Bionizer at the start of 2019 to try it and recently also bought the Eco Oxidizer to take our commitment to the next level because we were so happy with our purchase. We were astounded at how little maintenance our pool has needed since we added these quality products to the upkeep of our pool. The initial outlay has already paid for itself in full quite easily since.

Visitors even comment on how clean they feel in our pool and they love that there is no chlorine smell on their body or hair. Skin conditions like my eczema are not aggravated and my wife who has MS now feels confident to exercise daily and feel safe about spending all that time in the pool due to the health benefits of using our Bionizer. The pool always looks good and I have attached pictures for you to see for yourselves.

On a personal level the staff at this company are a pleasure to deal with, very caring and compassionate to their customers needs and give excellent service as they are very passionate about health and their products. If you are thinking of investing in these products then you will be very glad you did.