Got my kid a pair of goldfish and a 3.5 gallon tank, filter, rocks, plants, little decoration... Anyway, this was about a month ago, and I pretty much take care of the fish. Long story short, I fucked up and just used unconditioned tap water so these poor fish have been dying a slow, agonizing death since I got them. Like they're barely moving and look like they want to die. One of their tails fell off. So last night I realized what I had done, and rushed out first thing this morning to get water conditioner and medication. Spent $30 at Petsmart to try to save these $.14 goldfish that probably aren't going to make it. Oh well.