AF Air Scrubber — Reef pH Stabiliser 8.0-8.4 CO₂ Absorber for Reef Tanks - Aquaforest

Aquaforest AF Air Scrubber — reef pH stabilizer 8.0-8.4 CO₂ absorber

The AF Air Scrubber is Aquaforest's pH stabilizer, engineered to capture ambient CO₂ before it enters the tank via the skimmer. In a reef tank placed in a closed living space (living room, office, basement), room CO₂ concentration can exceed 800-1,500 ppm — double or triple outdoor levels — mechanically dropping tank pH toward 7.8 or lower. The AF Air Scrubber intervenes at the source by cleaning the air pulled in by the skimmer.

Watch the official Aquaforest video on the AF Air Scrubber:

Measurable result: the manufacturer states a typical pH lift of +0.2 to +0.4 units and stabilization in the 8.0-8.4 range, ideal for SPS biomineralization and coral tissue health. First effects appear within a few days of operation.

How the AF Air Scrubber works

• Skimmer connection — 10 mm fitting on top of the reactor connects the skimmer to the purified air intake.
• Moist sponges — three sponges at the base soaked in RO/DI water humidify the pulled air and improve CO₂ absorption.
• Absorber media — AF Air Scrubber Media cartridge loaded into the reactor body.
• Clean air — CO₂ is captured before entering the skimmer, the air injected into the tank no longer carries excess atmospheric CO₂.

Setup and parameters

• Placement: near the skimmer, in the sump or fish room.
• 10 mm silicone fitting — the AF Air Scrubber Hose is sold separately.
• RO/DI base sponges — moisten before first use then check periodically.
• Media cartridge — replace about every 2-3 months depending on consumption.
• pH monitoring — install a pH controller to validate the effect and anticipate media replacement.

Specifications

• Brand: Aquaforest (Poland)
• Type: pH stabilizer by CO₂ absorption
• Fitting: 10 mm silicone (hose not included)
• Media: AF Air Scrubber Media (sold separately, 2 L)
• Compatibility: all reef skimmers with external air intake

Why choose Aquaforest at ReefSolution

• Air Scrubber Media 2 L — the CO₂ absorber media refill required for the reactor.
• AF Air Scrubber Hose 1 m — the 10 mm silicone hose to connect scrubber and skimmer.
• Alkalinity Test Pro — the essential KH test to verify pH stabilization doesn't disturb alkalinity.

Frequently asked questions

What pH gain can I expect with the AF Air Scrubber?

Aquaforest reports a typical +0.2 to +0.4 unit pH lift and stabilization in the 8.0-8.4 range. Exact gain depends on the room's initial CO₂ concentration, the skimmer's air draw, and how fresh the absorber media is. In a heavily occupied office or living room, the effect can be higher.

Does the AF Air Scrubber replace an outdoor air line?

An outdoor-drawing air line remains the most effective (and free) solution if a window is near the tank. The AF Air Scrubber becomes relevant when no outdoor line is possible (basement, poorly ventilated apartment) or when the outdoor air itself is CO₂-heavy (busy street, winter with closed windows).

How often should I replace the absorber media?

Aquaforest doesn't set a strict schedule — duration depends on ambient CO₂ and skimmer draw. A pH controller helps anticipate replacement: as soon as stabilization drops and pH starts falling, the media is saturated. In practice, 2-3 months is a common ballpark.