I have dealt with those big 'box pet stores' for the last time... I purchased 2 Bettas maybe 2 weeks ago... The female has columnaris and I have no idea what was wrong with my male but last night he was struggling to keep centered and swimming down... I didnt get a chance to get to my LFS because it was 11PM and when I left for work at 8AM he was still kicking- i am making a trip to my LFS soon... He was dead when I arrived home.. So I call the Big Box Pet Store and told them the situation only to get met with "Sorry we cant do anything because you dont have your reciept." to which i replied "I bought them less than 2 weeks ago and you have looked up my previous sales without a recipet before... You sold me sick fish and should make it right" silence followed by "Well we dont do that anymore and sorry for your loss" and she hung up... NEVER AGAIN!:swear: