Atlantis Aquarium Water Purifier

3-stage reverse osmosis · 75 GPD · No pump · Aquarium and hydroponics

Compact 3-stage reverse osmosis unit that purifies mains water for aquarium and hydroponic use. Its 75 GPD membrane produces water at 95 - 98% purity.

Capacity: 75 GPD (284 L/day)
Purity: 95 - 98 %
Filtration: 3 stages
Pump: None mains pressure

Stock code3-04-AKV

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The 5 µm sediment filter retains particles larger than 5 microns; the carbon filter removes chlorine and protects the membrane. It has no pump and runs on mains pressure; quick-connect fittings and a 300 cc flow restrictor make installation easy.

Features

3-stage reverse osmosis filtration
Aquarium water at 95 - 98% purity
75 GPD membrane
No pump, no electricity needed
Compact build, easy quick-connect installation

Applications

Freshwater aquariums
Marine and reef aquariums
Shrimp, discus and soft-water tanks
Hydroponics and soilless growing
Terrariums and plant watering

Mains waterEnters the unit from the cold water line through the feed valve.Inlet
01
2" Inline Sediment 5 µm (Quick-connect)Retains sand, rust and sedimentReplace: 6 - 12 months
02
2" Inline GAC Carbon (Quick-connect)Removes chlorine, protects the membraneReplace: 6 - 12 months
03
75 GPD Membrane FilterSeparates dissolved salts and contaminantsReplace: 12 - 24 months
Purified waterPurified water is delivered to the faucet, ready to use.Outlet

Stage	Filter	Function	Replace
Stage 1	2" Inline Sediment 5 µm (Quick-connect)	Retains sand, rust and sediment	6 - 12 months
Stage 2	2" Inline GAC Carbon (Quick-connect)	Removes chlorine, protects the membrane	6 - 12 months
Stage 3	75 GPD Membrane Filter	Separates dissolved salts and contaminants	12 - 24 months

Recovery: about 1 part purified water to 3 - 4 parts concentrate. Replacement intervals are typical values and depend on water quality and usage.

Operating Conditions

Feed water pressure: 3 - 7 bar
Feed water temperature: 5 - 38 °C (41 - 100 °F)
Feed water TDS: Max. 500 ppm
Feed water pH: 3 - 11
Hardness: Max. 20 °F
Power supply: Not required (no pump)

Materials and Construction

Stock code: 3-04-AKV
Purity / rejection: 95 - 98%
Recovery (permeate : concentrate): ≈ 1 : 3 - 4
Connection: Quick-connect, 3/8" feed adapter
Flow restrictor: Quick, 300 cc
Box contents: Membrane, membrane housing, flow restrictor, sediment and carbon filter, tubing, connectors
Unit size: 130 × 130 × 350 mm
Warranty / service life: 2 years / at least 10 years

Usage Guide

Application	How to use the RO water
Freshwater aquarium	RO water has no minerals; add a GH/KH remineraliser before use.
Shrimp and discus	Add minerals to the GH, KH and TDS suited to the species; check with a test kit.
Marine and reef aquarium	Mix the RO water with sea salt; top up evaporation with pure RO water.
Hydroponics	Make up the nutrient solution with RO water; check EC and pH.

The TDS of the purified water is usually 0 - 10 ppm. Membrane ratings are for 25 °C water; production drops in cold water.

Version	Box Size (mm)	Box Weight
Single box	150 × 150 × 370	-
Carton (12 pcs)	620 × 470 × 390	12.83 kg

Standard replacement filters for this unit. Other filters that fit, including optional extra stages, are listed under Optional filters.

Stock Code	Filter	Size	Connection	Filter type
6-20-PP-Ç	2" Inline Sediment Filter	2"	Quick-connect	Sediment
6-20-GAC-Ç	2" Inline GAC Carbon Filter	2"	Quick-connect	GAC Carbon
3-1-1-ROM75 +1	1812 RO Membrane	1812	-	RO Membrane

Optional filters (7)

Stock Code	Filter	Size	Connection	Filter type
6-20-PP1-Ç	2" Inline Sediment Filter 1 µm	2"	Quick-connect	Sediment
3-1-1-F75	Filmtec 1812 RO Membrane	1812	-	RO Membrane
3-1-1-PEAK75 +1	Peak 1812 RO Membrane	1812	-	RO Membrane
3-1-1-ST75 +1	Star 1812 RO Membrane	1812	-	RO Membrane
3-1-1-V75 +1	Vontron 1812 RO Membrane	1812	-	RO Membrane
3-1-1-V75HP	Vontron HP 1812 RO Membrane	1812	-	RO Membrane
3-1-1-V75HT3	Vontron HT3 1812 RO Membrane	1812	-	RO Membrane