13mm Kool Tube – Dual-Core Cooling Hydroponic Feed Pipe
13mm Kool Tube – Dual-Core Cooling Hydroponic Feed Pipe
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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
Keep nutrient solution cool as it travels to the roots
The 13mm Kool Tube from Hydro Crop Shop is a flexible feed pipe for hydroponic systems where solution has to travel between reservoir and plant and a warm grow room heats it up on the way, encouraging root problems and cutting oxygen at the root zone. Its dual-core construction uses a white outer layer that reflects heat and light and a black inner layer that blocks UV, so the solution inside stays noticeably cooler than in standard pipe. At 13mm bore it suits individual drip lines and smaller-flow feeds.
Key Benefits
- Dual-core construction keeps nutrient solution cooler than standard pipe.
- Reflective white outer layer bounces back ambient heat and light.
- UV-blocking black inner layer stops light degrading the solution or feeding algae.
- 13mm bore suited to drip lines and smaller-flow feeds.
- Flexible, routing easily around reservoirs, pumps and drippers.
Is a warm feed line costing you root health?
Solution that warms up en route holds less dissolved oxygen and gives root pathogens a foothold, while light reaching the line encourages algae inside the pipe. Both show up as slow growth and a reservoir needing cleaning more often than it should. The reflective, light-blocking build keeps the run working in your favour.
How to Use
- Cut to length with a sharp blade and connect with standard 13mm push-fit or barbed fittings.
- Run between reservoir, pump and drippers, keeping it out of direct light for best cooling.
- Avoid sharp kinks that could restrict flow.
Technical Specifications
- Bore: 13mm
- Construction: dual-core (white reflective outer, black UV-blocking inner)
- Function: lowers nutrient solution temperature, blocks UV and light
- Fittings: standard 13mm push-fit / barbed irrigation connectors
- Best for: drip lines and smaller-flow feeds

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.
