yep that looks like the pump and here is the
link for the diffuser that I bought. I dont know if this system is right for your pond but it seems to be working great in my pond. I am sure the exsperts will evaluate your needs and determine if it will work for you. They say too little may be worse than nothing at all. Seems that I have read that in shallower water that you actually need more diffusers due to the lift capacity or the volume of water being cycled up. deeper water allows for more circulation hydralically if I remember right? The pros will let you know, they are a great bunch of people!
