Rated 3.5 out of 5 by 92
Rated 4 out of 5 by ScubaNat Overall, a good hardy machine
I had the 4000 model for a couple of years and it finally died today. It's a reliable little machine I used for my 55 gallon tank. It was noisy though, I would usually turn it off when I went to sleep. Top fin usually gets bad rap because of the lower end quality but this air pump did alright.
September 7, 2016
Rated 3 out of 5 by hydrophilic Too loud!
Used to circulate water in a hydroponic garden. The pump fulfills that purpose well, but makes an obnoxious noise.
May 11, 2016
Rated 1 out of 5
by DiamondJim Short Lifespan
These pumps have a short lifespan, either the diaphragm breaks or the reed valves break. Spare parts are not available. My TopFin 3000 lasted 2 years and now it is junk. Pumps are also noisy. Get some other brand,
March 8, 2016
Rated 5 out of 5
by MastoMom Top Fin Air 4000
I have this pump on my 37 gallon tank and it works great!! This pump replaced the pump we originally bought (for up to 40 gallons) because the one for up to 40 gallons did not do the job. We've had this pump (for 80 gallon) for a year and a half now and love it, so do our fish. I will be buying another for our new tank (another 37 gallon because we need to condense our two 10 gallons).
February 13, 2016