A: Amp AAOLM: Advanced Aquarist Online Magazine, electronic magazine AB: Aqualine Buschke, lighting manufacturer acro: Acropora, a type of SPS coral AC: Activated carbon, chemical filtration media / alternating current AC: Alternating current Acan : Acanthastrea AC II: AquaController II, all-in-one monitor & controller Ack: Acknowledge ADA: Aquatic Design Amano AEFW : Acro Eating Flatworms AF: Aquarium Frontiers, online magazine AFAIK: As far as I know AFM: Aquarium