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$164.80
Dupla 80549 Osmosis System RO 300, 3,544 kg — image 1
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Dupla 80549 Osmosis System RO 300, 3,544 kg

$164.80
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About this item
  • Reverse osmosis systems create an optimal starting water for sea and freshwater aquariums
  • Reverse Osmosis systems work according to the principle of physical filtering
  • Pollutants (e.g. silicate, nitrate) and hardening agents are physically extracted from the water
  • The water runs in the reverse osmosis system through the pressure of 2 - max. 6 bar thanks to a semi-permeable (semi-permeable) membrane
  • The substances dissolved in the water (pollutants, salts or hard agents) cannot pass through the small grid structure of the membrane and remain in the residual water
Product description

Box Contains Reverse osmosis system fully assembled with sedimet filter (5 µm fine filter), carbon filter and membrane. 3 x 2 m hose. 3/4 inch tap connection. Flow limiter with integrated flush valve Connection brackets for pre-filter and membrane housings. Wall mount. Hose plug. Housing key for diaphragm housing. Instruction manual Product Description Reverse osmosis systems create an optimal source of water for sea and freshwater aquariums. Often many water problems can only be solved by the use of reverse osmosis water. Reverse Osmosis systems work on the principle of physical filtering. Unlike ion exchangers, which exchange hardening ions (e.g. calcium) for other non-hardening ions (e.g. sodium), harmful substances (e.g. silicate, nitrate) and hardening agents are physically extracted from the water in a reverse osmosis system. The water runs in the reverse osmosis system through the pressure of 2 - max. 6 bar thanks to a semi-permeable (semi-permeable) membrane. The substances dissolved in the water (pollutants, salts or hard formers) cannot pass through the small grid structure of the membrane and remain in the residual water. This residual water is derived as a concentrate and can be safely used as plaster, casting or utility water. Dupla reverse osmosis systems have a retention rate of maximum 95-98% of all pollutants in tap water. Tip: by reconnecting a Dupla pure water filter (optional), even the slightest residues of silicates and nitrates can be completely removed without leaving any residue. Box contents: RO 300 fully assembled with sediment filter (5 µm fine filter), carbon filter and membrane 3 x 2 m hose 3/4 inch tap connection, flow rate limiter with integrated flush valve, wall mount, hose plugs, housing key for filter and membrane housings, operating instructions (English language not guaranteed). Technical data: max. Power 300 l/day, depending on the quality of the output water, average power 220 - 300 l/day at 8 - 15 °C and 3 - 6 bar pressure, average retention rate 95 - 98 % aluminium, 97 - 98 % cadmium, 95 - 98 % bacteria. 99% Nitrate max. 90% silicates max. 90% Sulphate 97-98% Hardener 95-98% Ratio Concentrate Permeat 4:1/3:1 depending on the quality and pressure of the output water. Ratio of tap water: Permeat 1,000 µS to 50 µS 300 µS to 15 µS ratio of conductivity tap water: Permeat with downstream Dupla pure water filter 1,000 µS to 1 µS 300 µS to 1 µS

Product details
Brand
Dupla
Manufacturer
Dohse Aquaristik GmbH & Co. KG

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10 Trustpilot reviews total, with 2 shown at a time.

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Excellent
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Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

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Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

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