AquaEL Filter ULTRAMAX BT

AquaEL aquarium filter. AquaEL's filter lines cover internal and external (hang-on/cascade) formats sized for tanks from roughly 20 to 300+ liters depending on model, with a media compartment that takes cartridges or loose filter media so it can be tuned to mechanical, biological or chemical filtration needs. Quiet operation is a design focus across the range.