Overall the pond is a nice setup and ideal for a small rock garden with space constraints. The things I don’t like about it is that the flow velocity of the water cannot be controlled (The power on the pump cannot be turned down).  So, the waterfall creates quite a splash and not ideal if the desire is to have some floating plants. Floating and most aquatic plants prefer calmer waters and do not like turbulence. I have tried to pile up rocks in various configurations but the water flow still creates agitation.  The other thing is the power consumption. The electricity supply to this unit has to be on all the time. — you would think in this day and age, there would be a set up for a renewable energy source  plug-in ,such as a small solar panel. With these limitations, this pond gets only 3 stars.