I see you have an ad on AquaBid for Double Line Brand Akadama. I am the GSAS HAP chairperson and I might be interested in trying it. Do you have the 'hard grade'? If not, which type(s) do you have. I will send you a PM as well.
75 Gallon, 2X55W AH Supply CF 8800K, 1XMarineland Doublebright, 2X Marineland 350 Magnum; 45 Gallon Tall, 96Watt AH Supply CF 6700K; 30 Gallon Long; Fluval F&P 2.0 36"/46W; 20 Gallon, 1X26W AH Supply LED kit; all with Press. CO2; (Calcined) Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)