The Vortex Gemini takes the Vortex Gemini short barrel filter 225 x 125 mm (124310) as its cartridge; Australian sellers list it from A$49.95 as of 30 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your spa
Vortex Gemini
Spa
Confirmed against Vortex's listConfirmed against Vortex's own compatibility list
Not yours? Change
Takes the 124310 cartridge
Gemini short barrel filter 225 x 125 mm (124310) · check the code on your old part before ordering.
Takes 1 cartridge in the barrel filter under the floating skimmer. There is no Purezone version.
Your spa
Spa
Confirmed against Vortex's listConfirmed against Vortex's own compatibility list
Takes the 124310
Cartridge · check the code on your old part.
Takes 1 cartridge in the barrel filter under the floating skimmer. There is no Purezone version.
Other Vortex models and their cartridges
The 124310 fits the Gemini only. These Vortex models take a different cartridge:
GenuineGenuine Vortex
$49.95
Spa World · 30 OctLowest genuine · Spa World · checked 30 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Vortex. Compatible: another brand.Genuine is made by Vortex. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $49.95
Spa World. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Spa World in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when it will not come clean or is damaged; until then rinse it weekly and soak it in cartridge cleaner monthly, as the Vortex manual says.
After replacing: The Vortex manual describes no filter reminder; follow its cleaning schedule.
How to change the cartridge in your Vortex Gemini
Watch the guide or follow the steps.
- 1Switch the spa off at the isolating switch before you open the filter.
- 2Remove the filter safety cage lid on the barrel filter.
- 3Pull the telescopic skimmer out of the safety cage and turn it anticlockwise to unlock it.
- 4Lift out the cartridge and rinse it, or fit a new one.
- 5Refit the skimmer and lock it clockwise, refit the cage lid (the cage must always be in place) and switch the spa back on.
Every number this part goes by
- Retail name:
- 124310
- Retail name:
- Vortex Gemini filter
Sellers list any of these; they are the same part.
About your Vortex Gemini
Vortex spa — Vortex 2-person spa (single barrel filter). Its cartridge is the Gemini short barrel filter 225 x 125 mm (124310), part 124310.
Where the model number is: The model name (Neon, Mercury, Cerium) is on your purchase papers. The serial number plate is on the base pan near the corner to the right of the keypad; on Palladium, Titanium and swim spas it is on the cabinet panel near the touchpad. Spas made from June 2016 (January 2018 in New Zealand) have camlock filters, earlier ones threaded.
Fits this Vortex model
Vortex1 model
Takes 1 cartridge in the barrel filter under the floating skimmer. There is no Purezone version.
Common questions
- Which cartridge fits the Vortex Gemini?
- The Vortex Gemini takes the Vortex Gemini short barrel filter 225 x 125 mm (124310). Takes 1 cartridge in the barrel filter under the floating skimmer. There is no Purezone version.
- Where can I buy the 124310 in Australia?
- We track 1 Australian seller for the 124310; the lowest listed price when we last checked was A$49.95 at Spa World. Prices are re-checked daily and dated on this page.
- How do I fit the 124310 in a Vortex Gemini?
- 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A clogged cartridge slows the flow and the pump works harder, and a torn one lets dirt back into the water, so the pool or spa clouds.
- How do I reset the reminder?
- The Vortex manual describes no filter reminder; follow its cleaning schedule.
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