I think it's a kind of anti-biotic they put in there to keep any potential infections at bay. It just happens to turn the water blue. I assume because I've had anti-biotics that turned the water blue-ish coloured too.
I've always wondered that too! I was just at Petsmart the other day and saw this and was wondering why the water is blue.
I always wonder how the keep track of which ones have been fed or not? I feel sorry for them. A lot of just kept in the dark and forgotten about.
I will say I was extremely surprised at the color variety they had. I missed the huge betta section they had last time I was there. I had no idea they had white ones and green/red ones and all kinds of varieties. It makes me wanna take a whole bunch home.
My local petsmart uses the blue water as well, but they do do water changes daily.. but I think it's an employee there that does that and not a store policy. unfortunatly, the bettas still look pretty bad.
well i think the blue makes it hard to see the bettas colors sometimes...
I feel sorry for the ones in the back of the self with no light or attention.
The petsmart here has blue water but the petland keeps them in a well lit shelf in glass jars....