Just Toby;4454983; said:You will never find a systemised shop, breeder or wholesaler running without UV on the systems.
???
One of my good friends, who lives a km or so from me, is the biggest cory breeder here in Denmark, with 50+ species in stock. Plus lots of other species.
I know more than a few big breeders, and they all refuse to use uv. UV = weak fish. And I can only agree.