Growing Advice, Guides

Common Mistakes That Reduce Water Filter Lifespan

Common Mistakes That Reduce Water Filter Lifespan

Maintaining and preserving your filtration and osmosis system, and keeping it in good working order is essential for healthy and efficient output.

However, many gardeners, from beginners to seasoned growers, make minor mistakes that substantially reduce the lifespan of their filters. Here are the most common mistakes and how to avoid them…

1. Not changing filters on time

This is by far the most common mistake growers will make. Each type of filter (sediment, activated carbon, osmosis membrane) has a specific lifespan. Using them beyond their capacity can reduce flow, contaminate the treated water, and even damage the entire system.

Recommendation: Create a maintenance schedule and regularly check the status of each filter.

GrowMax Advice: How often your filters should be changed is dependant on the number of litres filtered. [See Table 1]

(However, please note that water quality varies greatly from one area to another — therefore sometimes these guidelines apply, and other times the filters and membranes may last longer or shorter.)

For this reason, we usually recommend changing the pre-filtration (sediment and carbon filters) every 4 to 6 months, and the membranes every 1 to 1.5 years. Membrane lifespan will be much longer if the pre-filtration is replaced regularly, because the activated carbon protects the membrane from chlorine, which is its number one enemy.

2. Insufficient pressure in the system

Both excessively low and excessively high pressure can have an impact on the performance and lifespan of filters, particularly the osmotic membrane.

Recommendation: Check that the pressure is within the recommended ranges, and use a pressure pump as needed.

GrowMax Maxquarium 000PPM RO System
[Table 1] GrowMax Filter Capacity

3. Incorrect storage and handling

If you store filters in humid or contaminant-prone areas before installing them, you risk damaging their integrity even before they are used.

Recommendation: Keep spare parts in dry, clean places with moderate temperatures.

4. Failure to periodically disinfect the system

Bacteria and biofilm can accumulate in the system after prolonged inactivity.

Solution: Use specialized disinfectants every 6-12 months or when the membrane is replaced.

GrowMax Pro Tip: Cleaning products containing H₂O₂ (hydrogen peroxide) are the most suitable for disinfecting reverse osmosis systems. It’s generally recommended to use hydrogen peroxide at concentrations between 3% and a maximum of 10%.

You can use products such as Silver Bullet Mist and Growth Technology Liquid Oxygen, but we suggest lowering the concentration to around 3%, not exceeding 5%. It’s better to clean the system every 6 months with a lower concentration than to do a very intense clean once a year.

Replacement Filters / Addon Filters

GrowMax 10″ Replacement Green Carbon Filter

Original price was: £16.99.Current price is: £15.29.
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GrowMax 10" Replacement Green Carbon Filter

GrowMax Eco/Power/Maxquarium Replacement Filters

Original price was: £23.99.Current price is: £21.59.
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GrowMax Eco/Power/Maxquarium Replacement Filters

GrowMax Garden Grow Replacement Filters

Original price was: £49.99.Current price is: £44.99.
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GrowMax Garden Grow Replacement Filters

GrowMax Mega Grow 1000 Replacement Filter Pack

Original price was: £36.99.Current price is: £33.29.
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GrowMax Mega Grow 1000 Replacement Filter Pack

GrowMax Pro Grow Replacement Filters

Original price was: £149.99.Current price is: £134.99.
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GrowMax Pro Grow Replacement Filters

GrowMax Reverse Osmosis Membrane 150 GPD

Original price was: £74.99.Current price is: £67.49.
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GrowMax Reverse Osmosis Membrane 150 GPD

GrowMax Super Grow Replacement Filters

Original price was: £76.99.Current price is: £69.29.
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GrowMax Super Grow Replacement Filters

Inline DI Resin Water Filter with Resin

Original price was: £36.00.Current price is: £32.40.
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Inline DI Resin Water Filter with Resin

Recommended GrowMax Water Filter / RO Systems

GrowMax Garden Grow 480LPH Water Filter

Original price was: £179.99.Current price is: £161.99.
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GrowMax Garden Grow 480LPH Water Filter

GrowMax Maxquarium 000PPM Reverse Osmosis System

Original price was: £279.99.Current price is: £251.99.
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GrowMax Maxquarium 000PPM Reverse Osmosis System

GrowMax Mega Grow 1000 Reverse Osmosis System

Original price was: £339.99.Current price is: £305.99.
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GrowMax Mega Grow 1000 Reverse Osmosis System

GrowMax Pro Grow 2000LPH Water Filter

Original price was: £379.99.Current price is: £341.99.
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GrowMax Pro Grow 2000LPH Water Filter

Recommended Disinfectant / System Maintenance Products

Growth Technology Liquid Oxygen (Oxy-Plus)

Original price was: £8.99 – £29.99.Current price is: £8.09 – £26.99.
Select options This product has multiple variants. The options may be chosen on the product page
Growth Technology Liquid Oxygen (Oxy-Plus)

Silver Bullet Mist

Original price was: £12.99 – £79.99.Current price is: £11.69 – £71.99.
Select options This product has multiple variants. The options may be chosen on the product page
Silver Bullet Mist

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