Iwakis come in 2 versions American a little more than little giant and Japanese quite a bit more, what is the difference?
From what I understand the Japanese is the highest quality. The American slightly less quality and a bit louder in operation. An important consideration here is pump noise… Are you sensitive to pump noise? Some are and the Japanese Iwaki is almost silent the American is very quiet. The Little Giant pumps arent loud but to some people they are. Some folks like to have everything silent. Keep in mind the ETS is fairly loud not unreasonably but you definitely know its there. So that is pretty much the difference. Iwaki Japanese = Highest quality silent Iwaki American = Superb quality Little Giant = Good quality & affordable. FLOW RATE BULKHEAD SIZES I am going with a 120gal (48Lx24Wx24H).