I just went through and reread your other posts. The pH could have been high from the butane and alcohol poisoning the water. I too understand you wanting to take your parent's advice, afterall, they are the "experts" and they have been doing it for 20 years. Well, I have been keeping fish for probably 40 years. Let me tell you a few things we used to "believe" was best for our fish. We NEVER did water changes, it would "kill " the fish if the tank was too clean. My father used to "salt" his fish on a regular basis. This consisted of waiting till the fish came to the surface to eat and taking the salt shaker off the kitchen table and sprinkling salt on them. When we did clean the tank, we took it all down and washed it all with alittle soap and water. We didn't match the temperature of the tank and the new water we were replacing. Sometimes the tank would be so cold it would get condensation on it. No one have a heart attack... this is what we did a very long time ago. I have since grown up and realized that my parents weren't always right. I don't know you or your parents. I hope their business is a profitable one. I, myself, wouldn't buy any fish from a store that didn't know what cycling a filter is. I'm not trying to be mean or say anything against your parents. Either you are confused, or your parents shop isn't very reputeable. If you want to care for your fish properly, go to the beginners resourse center and start doing your research. I have 7 aquariums running, soon to be 8. I do a 50% water change on EVERY tank once a week. I haven't had a fish die in almost 2 years, except for the black ghost that jumped out. If you honestly want help with your tank, everyone on here would be glad to help, but if you don't want to listen to our advice, there is nothing we can do for you.