Hailea internal filters have a unique design, using a high quality filter sponge to breed nitrifying bacteria, with activated carbon inside so you can eliminate impurities in the water!
They also feature an adjustable flow control valve, spray bar, and an 'easy clean click' removable compartment to conveniently clean your filter media.
RP-400 has a flow rate of 400 L/h, for aquarium size 100-200 L