do you know a place where you can get a UV fish tank filter?

Question

Its a filter that minimizes the amount of algae.

Answer 1

They are available on ebay.com but keep in mind;
UV filters are able to kill the following;

free floating algae
free floating parasitic organisms
free floating bacteria
UV filters are NOT able to kill;

algae that is stuck to the glass, fish, rocks, plants
parasites your fish are already infected with
bacteria your fish are already infected with

Good luck to you!

Answer 2

You can usually find UV sterilizers at any fishstore that sells a lot of saltwater fish and reef related equipment.

Answer 3

UV sterilizers can be purchased at aquarium stores that specialize in high end marine aquarium components. Check your local fish store first. If not try marinedepot.com