IWS Brain Run-to-Waste Control Unit

IWS Brain Run-to-Waste Control Unit

The run-to-waste version of the IWS Brain — catches run-off from IWS pots or any DIY catchment tray, and pumps it automatically when the internal float switch triggers. Route the run-off back to your reservoir for recirculation, or down the drain if you're genuinely running-to-waste. Works across both automated and manually-fed systems.

Why growers choose the IWS Brain Run-to-Waste:

• Automatic run-off pumping — no manual emptying, no overflowing catch trays
• Internal float switch trigger — activates at your pre-set water level, ignores below
• Flexible output routing — return to tank for recirculation, or send to drain for run-to-waste
• Works on automated or manual-fed systems — pairs with IWS Flood & Drain, IWS Dripper, DIY catchment trays
• Essential for coco and soilless media — these generate real run-off volumes that need managing
• Proper IWS integration — compatible with the full IWS ecosystem of pots and fittings

Who it's not for:

If you're hand-watering in soil or using a system with no meaningful run-off (DWC, NFT), this is unnecessary. For Alien or AutoPot systems, use their branded equivalents rather than IWS-specific parts. Needs a sensible destination for the pumped water — plan your plumbing before installing.

See it running in our Stone shop. Drop by Unit 24, Emerald Way, Stone Business Park (ST15 0SR) to see this fixture set up, or call us on 01785 556355 (Mon–Fri, 10am–5pm) to talk through whether it's the right choice for your tent size and grow style. In stock now with 24hr UK dispatch, or choose click & collect at checkout.