Aquaflex 250 Pen

Man standing on the walkway of a Aquaflex 250 fish pen with green netting looking into the pen with several other pens in the background

The proven and highly successful Aquaflex 250 system covers pen sizes from 35-80m circumference and utilises 250mm diameter flotation pipes.

Incredibly robust and featuring a modular design, Aquaflex pens have been engineered to give farmers peace of mind so they can concentrate on rearing quality fish.

Aquaflex is the ideal system for inshore sea farms, freshwater farms, pilot farms and for rearing juvenile stock.

Key Points

  • Manufactured utilising the security and safety of our proven three-ring system.
  • Pen manufacture utilises butt fusion and electrofusion process and control.
  • A flexible yet robust and durable polyethylene structure, built for challenging environments.
  • Both inner and outer rings are polystyrene filled for added security.
  • A heavy-duty moulded base unit.
  • Low maintenance design resistant to saltwater corrosion.
  • Heavy gauge handrail pipe used to resist deformation.
  • Incorporates a full slip-resistant, modular decking system compliant with current HSE guidelines.
  • Pens have a low environmental visual impact.
  • A range of customisation possibilities and accessories available upon request.
  • All pens are supplied with an operator’s manual.


Pen Circumference 35m 40m 50m 60m 70m 80m
Pen Diameter 11.2 12.7 15.9 19.1 22 22.5
No. of uprights 18 20 24 32 36 40
Volume per 1m of net depth (1m3) 97 127 199 287 390 509
Pen weight (ton) 2 rings / 3 rings 1.5 / 1.8 1.5 / 1.9 1.9 / 2.4 2.5 / 3.1 2.8 / 3.5 4.0 (3 ring only)
Gross pen buoyancy (ton)* 2 rings / 3 rings 2.9 / 4.3 3.3 / 3.3 4.1 / 6.1 4.8 / 7.3 5.6 / 8.4 9.3 (3 ring only)

* Calculations are for seawater conditions

Man walking down a central walkway leading down to more than 10 Aquaflex fish pens on the water with mountains in the background.
Aquaflex Parts
  1. 2 or 3 Ø250mm polyethylene rings with heavy walled pipe to resist impact and kinking.
  2. Ø110mm injection moulded tee for butt fusion.
  3. Ø110mm stanchion/thick walled handrail.
  4. Ø110mm electrofusion coupler with an additional cleat.
  5. Heavy duty PE base unit complete with a built-in fender.
  6. Injection moulded modular decking.
  7. Electrofusion stops used to minimise base movement.
  8. Ø50mm retainer pipe used to integrate decking to base units and secured with electrofusion for a permanent fix.
  9. Polystyrene (EPS) inner ring infill.
  10. 3.4m/3 Tonne yellow mooring strop.

Aquaflex 250 Pens are also available in a square form ranging from 4m x 4m up to 12m x 12m

Diagram of the different parts of the pen system linking to the Aquaflex parts text

Get in touch to discuss your requirements

Jamie Young
Group Sales Director

+44 1463 229389

Gael Force Group Ltd
136 Anderson Street
South Kessock