RK2 Xflo 2.5 (200-400 gallons) are Co-Current which injects air

are Co-Current which injects air and water into the bottom of the skimmer which all travel upward in the same direction

MAGNESIUM PRO Reef Test Kit Package size/volume: 100 tests

REDThe RED spectrum is designed for tissue culture and cloning by producing maximum root growth during the plant's whole life

The world’s smartest return pump can be run on a schedule

but has the looks to match

RK2 Xflo 2.5 (200-400 gallons) are Co-Current which injects airThe most important things to consider when purchasing a protein skimmer are performance, reliability, and durability. XFLO Protein Skimmers combine all the above to deliver one of the most innovative protein skimmers available today! Dont be fooled by sleek looks, gimmicky twists, or exaggerated needlewheel performance! If a protein skimmer looks good and doesnt perform, how good is it? RK2 set the bar for protein skimmers in the public aquarium and