I've been contemplating adding a UV sterilizer to my 75 G. freshwater tank.
The prices aren't that expensive if it would be a positive addition.

I'm primarily considering it for 2 reasons: overall improvement of fish
health and assistance in the fight against algae.

Can anyone comment on the value of the sterilizer for these two things?

I'm having a horrible problem with algae that looks like hair growing on my
plants. I remove all the affected leaves and within a few days it is back.
I don't think UV sterilization will help with this problem, but I'm hoping
it might help with the bright green string algae that has been showing up on
the top of my tank and in the biowheel output.

Also, if it will raise the health level of my fish and/or give them a longer
life, I'd think it might be worthwhile.

I primarily have freshwater angels and loaches in my tank. (Along with
plecos and a few other fish.)

Tony