Formada3D Hydroponic tower kit for Australian 90 mm stormwater or 100 mm DWV PVC pipe: net-cup collars, top cap, base flange
Printed parts that turn a length of standard Australian PVC pipe standing in a 20 L bucket into a vertical hydroponic tower. Sized for DN90 stormwater pipe (90 mm outside) or DN100 DWV pipe (110 mm outside), from the pipe maker's published sizes; US 3 and 4 inch kits do not fit AU pipe. Each collar is a curved saddle held by two cable ties over a 51 mm hole-saw hole, holding a 2 inch net cup at 45 degrees with the cup reaching 13.6 mm into the water running down the inside wall; drips run back into the pipe. The top cap and rain tray spread the pump flow round the inside of the pipe, and the lid flange and clamp ring hold the pipe upright through the bucket lid. Black PETG to block light; printed to order in our Melbourne workshop.
From A$12.95 for the extra DN90 net-cup collar. Printed to order in Melbourne and shipped Australia-wide; we confirm the final price and lead time before anything is printed.
On the quote page choose Request a quote (no file needed) and name this part and the option you want.
Order status. Pipe sizes are from the pipe maker's published guides; the pipe's outside tolerance is not published, so the free coupon checks the cap and flange fit on your pipe. We suggest one collar on an off-cut first: drill a 51 mm hole, fit it with two ties, add a cup and pour water down the inside to watch it drain.
What does it look like in use?
Renders are computer images of our own design, made from the same model we print. This family is made to order: real photos of our first prints are coming.
Specifications: material, size and what it fits
| Spec | Detail |
|---|---|
| Material | PETG (black, blocks light so algae cannot grow in the cups), 0.24 mm layers on a 0.6 mm nozzle, 4 walls, 15 % gyroid, no supports. Full-sun towers: the same parts in ASA on request |
| Net-cup collar (x8 per kit) | 110 x 96 x 100 mm curved saddle with two 5.5 mm cable-tie channels, 51.6 mm bore for 2 inch (51 mm hole) net cups at 45 degrees, V-trough floor that drains back through the hole, 2 mm key that drops into the drilled hole to stop the collar sliding |
| Top cap + rain tray | Tray hangs on the pipe's inner top edge on a cone seat (any wall thickness), 12 x 2.4 mm drip holes rain water down the inside wall, 4 overflow notches; the 13 mm poly line passes through the cap and stops on 3 ribs; 3 vent slots in the cap skirt |
| Lid flange + clamp ring | Holds the pipe upright through a bucket lid, with a second port for the pump line and an open slot for the pump cable (no need to cut the plug off). 4 x M4 screws through the lid |
| Fits | DN90 PVC stormwater pipe (AS/NZS 1254, 90.0 mm outside) or DN100 PVC DWV pipe (AS/NZS 1260, 110 mm outside), pipe sizes from Iplex's published guides; 2 inch net cups made for a 51 mm hole; 13 mm LDPE poly (15.1-15.7 mm outside) |
| Not included | Pipe, bucket, pump, net cups, growing media, cable ties (about 300 mm DN90 / 370 mm DN100, 4.8 mm), 4 x M4 screws and nuts, 51 mm hole saw |
| Fit coupon | Free with an order: three pipe rings (0.15 / 0.25 / 0.35 mm per side) and a poly bore ring, to check your pipe before the cap and flange are printed |
How much does it cost?
Guide prices for printed parts, in Australian dollars. Shipping is extra; we confirm the final price, including any business minimum, before printing. Bulk and custom sizes are quoted per job.
| Option | From |
|---|---|
| Extra net-cup collar, DN90 | A$12.95 |
| Extra net-cup collar, DN100 | A$13.95 |
| 4 extra collars, DN90 | A$48.95 |
| 8-collar tower kit, DN90 (collars, top cap, rain tray, lid flange, clamp ring) | A$128.95 |
| 8-collar tower kit, DN100 | A$144.95 |
| Pipe fit coupon | Free with an order |
| ASA for full sun | Quoted on request |
Who it's for
Home and balcony growers, schools and community gardens who want a vertical hydroponic tower from hardware-store pipe instead of a commercial tower.
Safety & use
Installation & use. Designed for the uses described on this page only. Fixings are not included: use the sizes listed, check they are tight before use, and check the parts regularly for wear or damage. Not for safety-critical or overhead load-bearing use. Damage caused by misuse, modification or overloading isn't a fault in the product.
Water and food. PETG is not a certified food-contact material, and no printed part carries a food-safety certification. Indoor or shaded use; replace a part that turns cloudy, chalky or cracked. Rinse and clean with mild detergent or dilute hydrogen peroxide, not a dishwasher.
Water and power. Keep the pump's plug and power board well above and away from the bucket, use a pump made for submerged use, and follow its maker's instructions. Stand the tower on a level surface where a spill will not damage anything.
This doesn't affect your rights under the Australian Consumer Law.
Common questions
Which pipe does it fit?
Australian DN90 PVC stormwater pipe (90 mm outside, AS/NZS 1254) or DN100 PVC DWV pipe (110 mm outside, AS/NZS 1260), the sizes sold at hardware stores. Choose the kit size to match your pipe. US 3 and 4 inch kits do not fit AU pipe.
How do the collars attach?
Drill a 51 mm (2 inch) hole with a hole saw for each collar, sit the collar's saddle over it so the key drops into the hole, and pull it tight with two cable ties. The cup sits at 45 degrees and reaches into the water running down the inside of the pipe.
What else do I need?
A length of pipe, a 20 L bucket with a lid, a small submersible pump with 13 mm poly line, 2 inch net cups, growing media, cable ties and 4 x M4 screws with nuts. None of these are included.
Is it food safe?
No printed part is certified food safe, and PETG is not a certified food-contact material. The parts are black PETG to block light; use the tower indoors or in shade (ASA on request for full sun) and replace any part that turns chalky or cracked.
How do I order?
Use Get a quote and choose Request a quote, naming the pipe size (DN90 or DN100), the kit or the number of collars. We confirm the price and lead time before anything is printed.
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A wall-mounted block that feeds up to 8 micro-tube drip lines from one 13 mm poly line, every tube sealed by its own O-ring.
Last updated 15 October 2026.