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The combi-tank is a complete “hatchery system” designed for hatching eggs, first feeding fry and rearing larger fry. The system is comprised of an egg tray, first feeder tanks, and a main tank.
When the eggs hatch, the sac-fry move by gravity through the slotted screen of the egg tray into the first feeder tank below. After the fry are eating evenly, they can be moved into the main tank.
How It Works
The flow of water passes through the screen bottom from below and is discharged through the top of the centre outlet equipped with a fine PVC filtration screen. When the eggs hatch, the sac-fry move by gravity through the slotted screen bottom of the hatching tray into the first-feeder tray below.
Biomats, spike side down, are often used in this tank to conserve the fry’s energy. First feeding usually begins when the yolk-sac is consumed by 2/3.
Tank cleaning procedures begin at this stage to ensure a high standard of hygiene. The hydro-dynamics of the tank’s design facilitates the cleaning process.
When the fry are eating evenly, they are moved into the main tank.
With about 1,200 litres (320 gal.) of water, there is enough room to grow 25,000 fry to one gram before exceeding 20 kg/m3 of biomass. At this stage, the fry can be split or moved to a larger tank.
All tanks can be configured to meet your needs and are available with a variety of optional stand pipes, side boxes, sumps, screens, plumbing, and stands. Please contact us for more details on these options and for assistance in configuring your tank system.
- Combi system is designed as a complete system to start salmonoid development
- Hydrodynamics of the tanks design facilitate easy cleaning
- Grow up to 25,000 fry of 1g before moving to larger rearing tanks
- Upper egg tray with smooth PVC slotted screen to allow complete flow through
- First feeder tank fits within the main and is 10” in depth
- Main combi tank is 5’ diameter x 3’ deep and has a common plumbing system which allows flow through of water to all areas of tank