Description
Turn one air line into two without losing pressure
A simple T-shaped connector that takes 4mm airline on all three ports and splits a single feed into two branches. It is the part you reach for when you add another DWC pot, a second airstone in a reservoir or a spur off an irrigation run, and it saves buying a bigger pump when the existing one has capacity to spare. Moulded from rigid plastic, it pushes on firmly and holds a leak-free seal under continuous pump pressure. Small, cheap and worth keeping a handful of in the drawer.
Key Benefits
- One in, two out - Branch a single air line to feed two stones or pots.
- Fits 4mm tubing - Standard bore used across air pumps, DWC and aquarium kit.
- Rigid plastic build - Holds its shape and its seal under constant pressure.
- No tools needed - Push-on fit, so reconfiguring a system takes seconds.
- Expand cheaply - Grow a system without upgrading the pump.
The Problem with One Airline and Two Tanks
Air pumps almost always have more output than a single stone can use, but the outlet count is fixed. Growers end up running a second pump, or worse, moving one stone between reservoirs and leaving the other going stale. Dissolved oxygen falls, root zones turn sluggish and root rot gets its opening. A tee piece splits the flow you already have and keeps every reservoir aerated around the clock.
How to Use
- Cut the airline cleanly where you want the branch to start.
- Push both cut ends fully onto two ports of the tee.
- Run new tubing from the third port to the extra stone or pot.
- Fit a non-return valve on each branch if the pump sits below water level.
- Run the pump and check every joint for escaping air before walking away.
Specifications
| Fitting Size | 4mm airline |
|---|---|
| Configuration | T-piece, one inlet to two outlets |
| Material | Rigid moulded plastic |
| Connection | Push-fit, no tools required |
| Use | Air pumps, DWC, aeration and irrigation lines |
Questions & answers
Should I use a tee piece or a manifold?
A tee splits one line into two, which is ideal for adding a single stone or pot. To feed six, ten or twenty lines from one supply, a plastic manifold is tidier.
Does it fit standard airline?
Yes, all three ports take 4mm airline with a push-on fit, so no tools are needed.
Will it leak?
It's moulded from rigid plastic that holds its shape and seal under continuous pump pressure. Check each joint for escaping air before leaving it running.
Do I need a non-return valve?
If the pump sits below water level, fit one on each branch to stop water siphoning back.
Can I pick them up from the shop?
Yes, you can collect from our Wembley store, 250 Water Road, HA0 1HX, Monday to Saturday.
