End Caps for Modular NFT Hydroponic Gutter Base

These are end caps designed to close off the Modular NFT Hydroponic Gutter Base. They are part of my modular “raingutter” hydroponics system, which I created because square gutters are not readily available where I live—and when they are, they only come in 1 m segments at nearly the same price as printing my own. By designing my own parts, I can build a custom NFT hydroponic system that fits exactly to my needs.

Each cap is shaped to fit a specific end of the module, ensuring a secure closure. They can be attached using:

TPU seals (for reusable watertight connections)

Silicone (for semi-permanent sealing)

Glue (for permanent installation)

Use cases:

Closing off the start or end of a gutter run

Creating sealed channels for proper water flow

Preventing leaks and light intrusion that causes algae

Features:

Easy to print without supports

Custom fit to the gutter base ends

Works with TPU seals, silicone, or glue

Durable for long-term indoor or outdoor hydro use

Other parts in this modular system (separate designs):

Base module (main gutter body)

Blank top plate

Single-hole (55 mm) top plate

Multi-hole top plates

Connection clips

TPU seals

With these end caps, your NFT hydroponic “raingutter” system can be fully sealed and configured for any layout.