Hello everybody! I am having same water quality issues. My water always turns pink. I just changed the water a few days ago and the next day the water was pink! Where could the pink be coming from. I have 3 fancy goldfish in a 55 gallon aquarium.
One of my fish (the calico one) lost his tail. A few days ago my other fish ate his tail. He had never been aggressive before. Anyways we got rid of the aggressive fish the next day but bob (the injured one) seems a little lethargic. Here is a picture of the tank
It's really faintly pink, but it's also hard to tell in the picture.
I have a pink plant that I've had for a while however, I'll take it out anyway because I never liked it.
i agree, it's probably a type of red algae bloom that's making it pink.
or, it could be what you're feeding them. what colour(s) is the food you're feeding them? are they messy eaters? i know they poop a lot, so maybe their food or whatever is making their poop pinkish, and it leeches into the water.