Hmahli MBBR Bioreactor 5LCommercial grade moving bed biofiltration for marine and freshwater aquaria A true collaboration between Hmahli and Biotech Aquatica (BTA), this 5L Moving Bed Bioreactor combines aquarium expertise with precision sizing to deliver quiet, highperformance aerobic nitrification and selfcleaning media action. Use it for reef, fishonly and planted systems to reduce ammonia and nitrite, improve clarity, and generate beneficial bacterioplankton for