GrowStream 30x30 Terra Aquatica gutter support, tubes, T-pieces

Name: Gutter support 30 x 30 mm: sections, tees and end caps
Brand: Terra Aquatica
SKU: TA-TUBE30-140-L2
Availability: InStock

The summary

What you receive: one support element in the chosen length, 2 feet of 140 mm, 2 T-inserts or 4 slotted caps.
The role of each part: the elements form legs, uprights, crossbars and side rails, the tees join them together and the caps close off the feet.
Which length: each system has its own combination, from 314 mm for 10 plants to 458 mm for the large models.
Assembly: push-fit, with no screws or glue, and therefore removable.

Support parts, tees and caps for assembling or repairing the support for your gutters

The gullies of a gully hydroponic system rest on a 30 x 30 mm square tube support, assembled without glue or screws. Here you will find all its parts: the support elements, white square tubes in nine lengths from 140 to 485 mm, the T inserts that connect them and the slotted end caps that close the feet, for replacing a cracked element, raising an installation or building your own structure.

🏗️ The structure of a support

Each support is assembled like a gantry. Vertical uprights rest on a T-shaped insert, whose two branches take the short 140 mm legs, closed with an end cap. At the top, a horizontal crossbar joins the two uprights of each gantry, and side rails run along the length of the gutters. You can replace a damaged part on its own, without touching the rest of the structure.

The legs, 140 mm

Two feet extend from each T-shaped insert placed on the ground and give the frame its stability.

The uprights, 370 mm

These vertical tubes set the height of the grow channels above the reservoir.

The crossbars, 440 mm

They connect two uprights at the top of the frame, just under the gutters.

The side rails, 458 mm

These tubes form the beam that runs lengthways along the top of the structure.

🔩 The tee and the end cap

The T insert measures 138 mm long by 84 mm high. Its three branches push into three tubes, two in line and one at a right angle, to form a crosspiece or the start of a leg. The fin plug, 30 x 30 mm and 25 mm deep, has flexible fins that hold it in the tube without glue. It protects the floor, stops an open tube from filling with water or soil and removes the sharp edge at the end of each leg.

Scrubbing the pipes during support maintenance

A cracked insert weakens an entire plant stand, and the gutter it carries is no longer level, so the film of solution spreads poorly along it. If you shut down the gutter system to change the part, take the opportunity to run the 16 mm brush through the connecting pipes, where a biofilm gradually reduces the flow. You then restart a level installation and a clean circuit in a single intervention.

Measure the element to be replaced before ordering

Several lengths are very close, such as 390 and 393 mm, or 458 and 470 mm, and a piece that is too long throws the gutters out of level. Measure the piece in place from one end to the other, without the insert. On a tube from another source, check with a calliper that it really measures 30 x 30 mm on the outside, because a thick wall leaves too little room for the insert.

📐 Choosing the right length

Each system size uses its own combination of lengths. The frame of a 10-plant system combines a 440 mm cross-member with two 314 mm tubes, while the 20 to 80-plant systems use 370 mm uprights, 440 mm cross-members, two 458 mm side rails and a 393 mm central tube. The lengths of 390, 470 and 485 mm are used for made-to-measure structures. The safest approach is to identify the letter of the part on the assembly instructions for your system, then measure the one that is already in place.

🔨 Push-fit and replace

Cut the corner tube and deburr the inside with a file, otherwise the part binds and may split. Push the insert or the end cap in by hand, then finish with a rubber mallet, never a metal hammer. To replace an element, first empty the gutters or remove them, then pull off the damaged part, fit the new one as far as it will go, and check with a spirit level that the crossbar is horizontal before putting your gutters back.

Technical specifications

The support components

Section: 30 x 30 mm
Lengths: 140 to 485 mmThe 140 mm foot is sold in packs of 2
Material: White PVCMade in France, for indoor and outdoor use alike
Assembly: Snap-fit, no screwsOne insert per joint, one cap per foot

The T-insert

Footprint: 138 x 84 x 30 mm
Material: Polypropylene, black
Weight: 108 g
Manufacturing: France

The slotted cap

Footprint: 30 x 30 x 25 mm
Material: Low-density polyethylene, black
Weight: 15 g
Manufacturing: United Kingdom

To budget for separately

System: The drip system
Pots: Growing pots

6 further specifications are available in the detailed view.

In the box

1 white support element of 30 x 30 mm cut to the length you choose, or 2 elements of 140 mm for the feet
2 T-inserts or 4 slotted plugs, depending on the part chosen

References, lengths, dimensions, materials and origins taken from the manufacturer's data sheets and its 2026 price list; quantities per system taken from the GrowStream V2 assembly instructions for 10, 20, 60 and 80 plants, on 07/10/2026.

Product videos

Setting up a 20-plant gutter system

Introducing the GrowStream V2 gutter system

Documents & manuals

Assembly instructions, 20-plant system

The illustrated parts list identifies each square tube by its letter and length.

PDF · 1,5 Mo

Download

Assembly instructions, 80-plant system

It details the assembly of the square-tube frames, step by step.

PDF · 1,6 Mo

Download

Estimate your
delivery time

Items are shipped by tracked parcel from France. The exact costs and final delivery times are shown in the basket once the address has been entered. Outside the European Union, import duties and taxes are payable by the recipient.

Frequently asked questions

6 questions

6 key questions

What lengths do I need for my gutter system?

The assembly instructions give, for each system size, the number of tubes of each length.

Length	10 plants	20 plants	60 plants	80 plants
140 mm, legs	4	6	12	18
314 mm	2	0	0	0
370 mm	0	3	6	9
393 mm	0	1	1	1
440 mm	1	2	4	6
458 mm	0	2	2	2

Does the 140 mm foot come supplied with its plug?

Should the parts be glued?

How do you fit an insert that won't budge?

Can you build a made-to-measure support?

To raise the gutters, you replace the uprights with a longer length, from 390 to 485 mm, keeping the same length on all the frames.

For a new structure, you can freely combine the lengths with T-shaped inserts and end caps, making sure the crosspieces stay perfectly horizontal.

The inserts and end caps also suit a square tube of 30 x 30 mm measured on the outside from another source, in PVC or aluminium.

Will the stand hold up outdoors and under full gutters?

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Gutter support 30 x 30 mm: sections, tees and end caps

The summary