MixAir Retro RB4 DiffuserUse the MixAir Retro RB4 to economically aerate mid sized recreational bodies of water or vigorously mix industrial tanks. It can transfer more oxygen and mix more liquid per horsepower than any other competitive diffuser. The Retro RB4 is a fine bubble diffuser that both aerates and mixes in one efficient device. It is designed to generate dissolved oxygen throughout a water column to accelerate inversion or turnover which keeps water fresh. The RB4
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