Matt68005
Aquarium Advice Addict
Some of my guppies have split tails, I think from too large water changes or poor water quality...not ammonia nitrate, but city water supply old pipes and whatnot. Others have tails that may have been nipped by females and mating sparring. I have heard that vitamin D helps with split tails. Is there truth to this? How would i go about it....im pretty much broke until next friday, but i do have some 500iu vitamin D pills. How do you give Vit. D to a fish anyways?