Redirect your 4 mm tubing at 90° without kinks — Essential for routing drippers to every plant.
BloomLED, indoor-growing expert for over 10 years, hand-picks reliable accessories designed for hydroponic systems.
4 mm diameter · 90° angle · High-density plastic · Push-fit connection
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The BloomLED 4 mm elbow is the corner fitting you need to cleanly structure your micro-irrigation network. It lets you redirect 4 mm capillary tubing at 90° with no kinks, no loss of flow and no risk of clogging — a small technical detail that makes a real difference when your drippers must wrap around a pot, a stem or the edge of a grow tent.

| Specification | Detail |
|---|---|
| Inner diameter | 4 mm |
| Angle | 90° (right-angle elbow) |
| Material | Food-grade high-density plastic |
| Connection | Push-fit — press-in, no tools required |
| Compatibility | 4 mm capillary tubing, 4/6 mm micro-tube |
Unlike a tube forced into a bend, the elbow keeps a constant internal passage: each plant receives the exact same amount of water and nutrients — essential for a uniform indoor crop.
Push each end of the 4 mm tubing into the elbow with simple pressure: the connection is immediate, watertight and demountable. No clamps, no glue, no tools.
Ideal for structuring a drip network inside a compact grow tent or going around the edges of a flood-and-drain tray. Your tubing follows the geometry of your setup without cluttering the space.
Yes — this fitting is designed for the 4 mm internal standard used in 95% of hydroponic micro-irrigation systems (black 4 mm capillaries, 4/6 mm Siroflex and similar tubing). If your tube has an outer diameter of about 6 mm, it is compatible.
Do I need any tool or glue to install it?No. The elbow uses a push-fit mechanism: simply push each end of the 4 mm tubing into the elbow until it stops. The connection is watertight thanks to the internal seal and remains demountable if you want to reorganise your network later.
A €0.39 accessory that safeguards the integrity of your entire irrigation system — chosen and tested by the BloomLED team for serious indoor growing.