The aquarium after using the AA Aquarium Internal UV Sterilizer.
Also, it is recommended to install the UV sterilizer when the aquarium is cycled.
The plus side to these submersible UV Pump/Filters is the need for no additional plumbing in aquariums or ponds, not that splicing a line for a TMC or Terminator UV is all that difficult (with ponds though, extra devices such as UVs can sometimes be a bit more of a plumbing project).
However the another entry into the field of Internal UVs are still incorrect as per their flow rate (& construction); The AquaTop UV Sterilizer Pump 3, 5, 7, & 9 watt are actually no better than the Submariner or similar early generation Internal UVs (please read more about these later in the article).
First the Proprietary Heavy duty 13 watt and 9 watt UV Pump/Filter design with double O Rings seems to have solved the leakage/UVC short problem for the most part, and the flow pattern/design is also improved over earlier Submariner and similar models.
One negative is "rated" flow rate, however as per our tests this "rated" flow rate is not the actual flow rate; the actual/adjusted flow for certain proprietary units by AAP is much better for level one UV Sterilization. The propeller design of the impeller has little head pressure which actually is better for maintaining a flow rate of 25 gph per watt in the vertical configuration. However, the flow rate is not good enough for circulation of very large aquariums or ponds, so for this reason other circulation pumps should be utilized so and I advice to not depend upon these UV Pumps as the primary mode of circulation.
AA Aquarium Inc. Internal UV Sterilizer
Aquarium and Pond UV Sterilizer, Clarifier Reviews; Problems, Bulbs
The aquarium UV Sterilizer is a water filtration device that uses an ultraviolet light bulb to kill microscopic organisms that are free floating in the water. Parasites, viruses, algae and bacteria (good and bad) are the type of things that are "killed" after passing through the ultraviolet sterilizing unit. UV sterilizer devices can be used on swimming pools, in liquid factories (think beer) and in the home aquarium using an aquarium UV sterilizer. Some large water purification centers employ some sort of UV sterilization on the outgoing water. These sterilizer units are also sometimes used in outdoor ponds to help control algae growth and they seem to do a decent job.Aqua Ultraviolet’s UV Sterilizers have been used by public aquariums, importers and hobbyists alike to control bacteria, protozoa and parasites, reducing the spread of fish disease. In a confined environment like an aquarium UV and filtration are essential. When using a UV Sterilizer in a home aquarium, the UV unit should be placed last in the filtration line. You want to first filter the aquarium water through your and then run the water through the UV device before returning the water to your fish tank. By first removing the solids in the aquarium water with your mechanical filter (canister filter, etc), you are helping your UV unit to attain maximum operational efficiency.So were being used to purify drinking water. Commercial aquaculture was also using UV to reduce diseases in high-density grow-out operations. equipment manufacturers thought UV sterilization would be a good idea for home aquarium use. It was believed that UV would make disease and algae problems a thing of the past. But that’s not what happened.