Skip to content
VillaPool

—Pumps, filtration and plant

Glass filter media

Recycled glass can replace sand in many pool filters. The change is simple, but it helps to know what differs.

Glass filter media is crushed and processed glass graded for filtration. It is used in the same pressure vessels as sand. Suppliers describe benefits such as resistance to clumping and channelling and efficient backwashing; how much difference it makes depends on the pool, the filter and how it is looked after.

Equipment guides are about choosing, sizing and installing plant, not about day-to-day pool care.

Changing over involves emptying the filter, inspecting the laterals and internals, and filling with the quantity and grades of glass the filter manufacturer specifies. Because glass is lighter than sand, the volume and backwash settings may differ. The first backwash after changeover removes fines.

01Summary

What matters most here

  • Same vessels

    Fits most sand filters.

  • Different behaviour

    Backwash and quantities may differ.

  • Follow specifications

    Grades and amounts for your filter.

02Detail

Changeover steps

  • Empty the filter

    The pump is isolated, the filter drained and the old sand scooped out carefully so the internals are not damaged.

  • Inspect internals

    Laterals and standpipe for damage.

  • Fill with glass

    Coarser grades go in first to protect the laterals, then finer grades on top, in the quantities the filter manufacturer specifies.

  • Initial backwash

    To clear fines.

03Before you start

Before switching

  • Check filter compatibility

    With the manufacturer.

  • Note the filter model

    For media quantities.

  • Plan disposal

    For old sand.

—In practice

How to use this

Check the filter manufacturer’s guidance on glass media and the grades and quantities required. Plan the changeover: remove the old sand, inspect the laterals, add glass in the correct grades and amounts, then backwash and rinse before returning to normal filtration. Watch pressure and clarity over the following weeks.

Mistakes worth avoiding

Using the wrong grades
Glass media comes in grades. Using the wrong ones, or the wrong amounts, affects filtration and backwashing performance.
Not inspecting the laterals
Cracked laterals let media pass into the pool. The changeover is the easiest moment to check and replace them.

04FAQ

Common questions about this

Is glass better than sand?
Both work; glass has different characteristics that some owners prefer.
Can any sand filter take glass?
Many can; check the manufacturer’s guidance.
Does glass need less backwashing?
It can behave differently; follow pressure readings.
Is the changeover difficult?
It is straightforward with care for the internals.
What happens to the old sand?
It is bagged and removed; it should not be emptied into gardens or drains.

05Read next

More pool guides on this

Filed under pump & filtration systems. Every pool guide is listed on the pool guides page.

—NEXT

Considering glass media?

Send your filter model. We will explain the changeover.

Describe your pool+971 56 181 0106WhatsAppPump & Filtration Systems