Ro unit
Ro unit for sale on Ireland's largest auction and classifieds sites
100gpd stage reverse - 50/75/100gpd, 4 - £89.99
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
Aquati stage di resin - 5, ro - £99.95
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Reverse osmosis unit with - osmosis, ro - £139.99
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
Reverse osmosis unit filter - osmosis, - £10.99
Finest aquatics ltd • Helpful links - Free postage - New and Used
Finest aquatics ltd • Helpful links - Free postage - New and Used
Looking for more ro unit?
Search eBay live — fresh results filtered for the best value, updated every hour.
Stage di resin - ro, reverse - £85.95
Reverse osmosis waste • Water clamp push • Fitting tap adapter - Free postage - New and Used
Reverse osmosis waste • Water clamp push • Fitting tap adapter - Free postage - New and Used
📊
48 listings · from £3.99 · avg £62.74
⚠️ These listings were last updated more than 22 days ago.
Search for fresh listings
Browse 48 ro unit listings currently in our index. Prices range from £3.99 to £169.95, with an average of £62.74. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about ro unit →
Finerfilters aquarium water - finerfilters, - £48.50
Finerfilters whole house • Complete shower water • Length tubing garden - Free postage - New and Used
Finerfilters whole house • Complete shower water • Length tubing garden - Free postage - New and Used
Aquati stage di - 4, - £48.15
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Aquati stage di unit - ro, - £54.95
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Reverse osmosis unit - reverse, ro - £64.99
You are purchasing • High quality reverse • Osmosis booster pump - Free postage - New and Used
You are purchasing • High quality reverse • Osmosis booster pump - Free postage - New and Used
Aquati stage di system - 5, ro - £48.95
Litre remium quality • Resin used after • Process further reduce - Free postage - New and Used
Litre remium quality • Resin used after • Process further reduce - Free postage - New and Used
Reverse osmosis unit - reverse, - £51.95
High quality reverse • Osmosis booster pump • Available choice four - Free postage - New and Used
High quality reverse • Osmosis booster pump • Available choice four - Free postage - New and Used
Reverse osmosis stage - 3, ro - £22.99
- Free postage - New and Used
- Free postage - New and Used
Reverse osmosis unit - osmosis, - £17.49
Inline ball valve • Push fit reverse • Osmosis water filter - Free postage - New and Used
Inline ball valve • Push fit reverse • Osmosis water filter - Free postage - New and Used
Pozzani prowater 4040 - pozzani, - £126.00
- Free postage - New and Used
- Free postage - New and Used
Reverse osmosis unit - ro, - £24.99
Finest aquatics ltd • Helpful links - Free postage - New and Used
Finest aquatics ltd • Helpful links - Free postage - New and Used
Geekpure 50gpd unit with - geekpure, - £31.90
Geekpure 50gpd unit • Top line reverse • Fish tanks aquariums - Free postage - New and Used
Geekpure 50gpd unit • Top line reverse • Fish tanks aquariums - Free postage - New and Used
Reverse osmosis unit filter - ro, - £6.99
- Free postage - New and Used
- Free postage - New and Used
Aquati stage large di - 4, ro - £78.95
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Granulated gac carbon - gac, - £161.99
These gac filters • Fit standard unit • Canister - Free postage - New and Used
These gac filters • Fit standard unit • Canister - Free postage - New and Used
Reverse osmosis ro - osmosis, unit - £74.99
These are standard • Filters will fit • All housings - Free postage - New and Used
These are standard • Filters will fit • All housings - Free postage - New and Used
Reverse osmosis membranes - osmosis, ro - £43.95
- Free postage - New and Used
- Free postage - New and Used
200gpd stage reverse osmosis - 4, - £159.99
You are purchasing • High quality finest • Filters 200gpd unit - Free postage - New and Used
You are purchasing • High quality finest • Filters 200gpd unit - Free postage - New and Used
Window cleaning aquarium - £119.99
Window cleaning aquarium • Unit this high • Supplied full kit - Free postage - New and Used
Window cleaning aquarium • Unit this high • Supplied full kit - Free postage - New and Used
Reverse osmosis unit - reverse, - £37.99
Piece finest aquatics • Ltd - Free postage - New and Used
Piece finest aquatics • Ltd - Free postage - New and Used
100gpd stage compact - 3, - £48.99
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
This unit available • Three different sizes • 50gpd 75gpd 100gpd - Free postage - New and Used
Aquati stage di unit - aquati, - £64.95
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Reverse osmosis ro unit - x, - £10.99
These carbon block • Filters fit standard • Unit canister umkehrosmose - Free postage - New and Used
These carbon block • Filters fit standard • Unit canister umkehrosmose - Free postage - New and Used
400gpd reverse osmosis - reverse, - £67.99
- Free postage - New and Used
- Free postage - New and Used
Stage di resin - ro, & - £95.00
Removes dirt sand • Rust which supplied • Filled high quality - Free postage - New and Used
Removes dirt sand • Rust which supplied • Filled high quality - Free postage - New and Used
100 150gpd stage - 4, reverse - £90.00
Aquarium unit this • Supplied full kit • Including all filters - Free postage - New and Used
Aquarium unit this • Supplied full kit • Including all filters - Free postage - New and Used
Reverse osmosis filter - ro, set - £29.99
Litre bag resin • Carbon block filter - Free postage - New and Used
Litre bag resin • Carbon block filter - Free postage - New and Used
Stage di reverse - di, - £42.99
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Stage compact aquarium - compact, - £36.99
Reverse osmosis technology • That used remove • Large majority contaminants - Free postage - New and Used
Reverse osmosis technology • That used remove • Large majority contaminants - Free postage - New and Used
Stage aquarium reverse - 4, - £68.99
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Hanging mounting bracket for - hanging, - £5.99
Bracket will mount • You are purchasing • Quality mounting hanging - Free postage - New and Used
Bracket will mount • You are purchasing • Quality mounting hanging - Free postage - New and Used
Large stage reverse osmosis - reverse, - £75.95
Push fitting tap • Adapter waste water • Clamp mains connector - Free postage - New and Used
Push fitting tap • Adapter waste water • Clamp mains connector - Free postage - New and Used
Flow restrictor for reverse - flow, - £3.99
Flow restrictor available • Either 300cc 400cc • 550cc 800cc - Free postage - New and Used
Flow restrictor available • Either 300cc 400cc • 550cc 800cc - Free postage - New and Used
Aquati stage di unit - &, - £49.85
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Filtered water clear • Soft free contamination • Due fact that - Free postage - New and Used
Finerfilters aquarium stage - finerfilters, - £70.00
Finerfilters ltd about • Team item typeaquarium • Reverse osmosis include - Free postage - New and Used
Finerfilters ltd about • Team item typeaquarium • Reverse osmosis include - Free postage - New and Used
Compact unit replacement - ro, - £8.49
These filters should • Replaced months order • Keep your compact - Free postage - New and Used
These filters should • Replaced months order • Keep your compact - Free postage - New and Used
Aquati stage medium reverse - 4, - £77.95
Products must unused • Aquati ltd specializes • Assembly sales high - Free postage - New and Used
Products must unused • Aquati ltd specializes • Assembly sales high - Free postage - New and Used
Replacement flush valve flow - flush, - £7.99
Flow restrictor available • Either 300cc 400cc • 550cc 800cc - Free postage - New and Used
Flow restrictor available • Either 300cc 400cc • 550cc 800cc - Free postage - New and Used
Compact reverse osmosis - osmosis, ro - £8.99
These filters should • Replaced months order • Keep your compact - Free postage - New and Used
These filters should • Replaced months order • Keep your compact - Free postage - New and Used
Vontron high quality reverse - vontron, - £29.95
Any change these • Values changes performance • System extends lifespan - Free postage - New and Used
Any change these • Values changes performance • System extends lifespan - Free postage - New and Used
Aquati stage 450gpd reverse - 4, - £169.95
Aquati rodi water • Filter complete ready • Use device capacity - Free postage - New and Used
Aquati rodi water • Filter complete ready • Use device capacity - Free postage - New and Used
Chen self regulating booster - self, - £59.99
Use booster pump • Drastically improves amount • Product water produced - Free postage - New and Used
Use booster pump • Drastically improves amount • Product water produced - Free postage - New and Used
Stage di reverse - 5, - £137.95
Large refillable line • Filter filled high • Quality resin garden - Free postage - New and Used
Large refillable line • Filter filled high • Quality resin garden - Free postage - New and Used
Stage reverse osmosis water - reverse, - £94.95
Waste water clamp • Refillable inline filter • Filled high quality - Free postage - New and Used
Waste water clamp • Refillable inline filter • Filled high quality - Free postage - New and Used
Try this: tropical fish guppies | aquarium external filter uv | aquarium slate | koi fry | 10ft aquarium | eheim external | red sea skimmer | superfish pump | biorb pump | large live aquarium plants
Shop by budget
Everything you need to know about ro unit
Whether you are looking for a brand-new or second-hand ro unit, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £3.99, while premium listings can reach £169.95 — giving you a wide budget spread to work with. The average price of £62.74 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.