Well I did it, I got pissed off and went off on someone. He has a 20 gal and some of his fish died. One of his fish was a 12" common pleco. The rest were tetras, goldfish, and various livebearers. Well he bought some more fish to put in his tank and they died, he took them back to the lfs along with a water sample. His ammonia was 2.0+ and he was mad his fish died. I was just standin there when he was yelling at the poor girl who was swamped at the time, then I interrupted and asked him his tank size. Then I asked him why he bought a fish that was clearly marked on the sign to exceed 20". "I didn't know it has the size on the sign" Then I asked why he doesn't learn about fish before he buys fish, then at least he can save himself some time, money, and frustration. Then he was going to buy ph up for his ammonia problem................ I just looked at him told him to forget chemical alteration and do a water change and part with the pleco. Then I walked away. Then I got into it with a petsmart employee who swears all plecos only eat algae. So what is wrong with selling them to people it is hard to find ones good for a 10 gal. I showed her the ottos, and said these eat algae, then took her to the gold nugget and said these eat meat, carnivores. Then I said most will eat some wood. At least now she knows better fish to sell people. Thanks for letting me vent.