GrowMax 3000 Green Carbon Block Filter – RO Pre-Filter
GrowMax 3000 Green Carbon Block Filter – RO Pre-Filter
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
- 14-day returns
- Price match promise
- Free Wembley store pickup
- Advice from the team: 020 3488 0419
Description
The pre-filter that protects your GrowMax 3000's membranes
This green coconut carbon block is the dedicated pre-filtration stage for the GrowMax 3000 Reverse Osmosis System. It sits ahead of the two RO membranes, stripping out chlorine, sediment and organic compounds before they ever reach the far more expensive membrane stage.
Key Benefits
- Protects your membranes — chlorine left unfiltered degrades an RO membrane far faster than ordinary use
- Coconut-shell carbon — a dense, high-capacity media for chlorine and taste/odour removal
- Removes sediment and particulates — keeps grit and rust out of the RO stage
- Low-cost insurance — a filter change is far cheaper than an early membrane replacement
- Direct fit — sized specifically for the GrowMax 3000 housing
Unfiltered mains water carries chlorine and sediment that shorten the life of any RO membrane behind it, so a carbon block left too long turns a routine maintenance job into a costly one.
How to Use
Isolate the GrowMax 3000, open the housing and swap the spent block for the new one. Change every 6 months, and check the RO membrane at the same time — it typically needs changing every 6 months to 2 years depending on use and input EC.
- Filter type: green coconut carbon block
- Fits: GrowMax 3000 Reverse Osmosis System
- Removes: chlorine, chloramines, sediment, organic compounds, taste and odour
- Recommended change interval: every 6 months

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.
