13mm Kool Tube

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.