Very efficient, convenient, discreet and resourceful

After testing several filters for tanks of 200 liters and dust, I can only recommend it for a more affordable price than external filters often more suitable for large tanks. This system is seen ingenious design, takes up little space for similar effects to other systems when it is just as effective, if not more. Is easy to clean, fast acting, adjustable at several levels (oxygen level, direction and jet power). The water is clear so quickly that even the chemical and mechanical biological balance is maintained. Conquered for this highly efficient internal filter. Having hesitated with the purchase of an external filter with many advantages, I preferred to take another big tray system which had proven, I was so sure of the result, the more affordable price for the remaining 200 liters.