All-In Skim - 4 in 1 Skimmer - Aquaforest

The All-In Skim 150 consolidates four distinct filtration functions—protein skimming, CO₂ scrubbing, biological filtration, and activated carbon air filtration—into one unit sized to fit a standard sump footprint. For reef keepers managing pH swings, nutrient accumulation, or equipment clutter, this approach addresses multiple problems at the source rather than adding individual devices incrementally.

By routing the skimmer's air intake through a CO₂ scrubber media chamber, the All-In Skim reduces the concentration of carbon dioxide being introduced into the water column during normal skimmer operation. Elevated indoor CO₂ is a common driver of low or fluctuating reef tank pH, particularly in well-sealed homes. The closed-loop circulation design extends the useful life of scrubber media while improving the consistency of gas exchange across the day-night cycle.

The integrated biological chamber gives beneficial bacteria a stable, dedicated location to colonize within the skimmer body itself. This supports ongoing breakdown of excess nitrogen and phosphorus compounds before they accumulate to problematic levels. Combined with the mechanical and chemical filtration provided by the skimmer and activated carbon stages, the result is improved water clarity and reduced organic load on the rest of the system.

The included Reeflow 2300 pump offers 1% incremental output control, quiet operation, and built-in protections against dry run, overheating, and electrical faults. A feeding mode and controller compatibility allow the pump to integrate into automated routines without additional hardware. The unit ships complete with silicone hoses, five filter sponges, 800 mL of CO₂ scrubber media, 400 mL of activated carbon, and 400 mL of Life Bio Fil biological media—everything needed to run all four filtration stages from day one.

The All-In Skim 150 is sized for tanks up to 198 gallons under light bioload, 130 gallons under medium bioload, and 80 gallons under heavy bioload. It requires a minimum water depth of 7.25" and a sump footprint of approximately 7.32" × 7.17". It is best suited for mixed reef and SPS systems where pH stability and water quality consistency are primary concerns, and where sump space is at a premium.