Well I don't have any free floating algae problems. Any algae I have is in the form of very thin layers either on the glass or plants, which is quickly eaten by the pleco.
No matter what I put in that tank, whether algae wafers, zucchini, etc., and no matter which method I use to get it into the tank, my barbs refuse to let it exist for more than a few minutes. Any algae I do have is the primary food source for the Pleco and the last thing I want to do is eliminate that source. However, if UV light deals mainly with free-floating algae, than it should be fine.
*All kinds of plants
*Barb species tank