The UV filter just improves the water quality by killing free floating bacteria, viruses and other crap.sohfatfish said:Eh.. how does the UV filter weaken the immune system of the fish?.. it doesnt make sense.. unless u shine the light onto the fish?The UV filter just improves the water quality by killing free floating bacteria, viruses and other crap.
Tainted Glory said:I spoke to one of my friends about UV. He is a discus breeder, btw. He advised me against them, claiming that they weaken the fish's immune system. It makes sense, but is it true?