^ hmmm i want to do some research on this and hear more, but its late and im about to sleep...
But where and what sort of radition is coming from the pumps? And by pumps you mean Air Pumps?
Air pumps and power pumps both produce EMF electromagnetic radiation. So do x-rays, gamma rays, MRI'S, cell towers, power lines, microwave ovens, inverters, generators, any power plugs with an ac/dc converter box, smart meters, and to a smaller degree-cell phones, wifi, computers, laptops, TV screens, electric shavers, hair dryers, electric blankets, radios, electric wiring...
The amount of EMF coming off aquarium pumps is extremely high. 3-4 milligaus range starts affecting humans biologically. Aquarium pumps produce well over 100+ milligauss when standing next to them. If you step back 3 feet the EMF drops off to around 6. Stand about 5-6 feet away from the aquarium and the levels are 0.5. It was completely incidental that I found this out while walking around my house testing radiation levels. I had no idea the aquarium pumps would produce more radiation than our microvawe and smart meter.
There' are a lot of studies on EMF, some showing a lot of negative effects and others inconclusive. There have been medical studies on children living close to power lines developing leukemia when the levels are at 4 or higher. Lots of studies on EMF causing cancer, endocrine disruption, fertility problems.