I am heading out to get some neon tetras tomorrow but I have some questions: 1. I've heard in a Youtube video someone saying that the temperature of the water must remain consistent with neon tetras, well I live in Arizona and I use an aquarium fan for my aquarium, so the temperature generally fluctuates by 1 degree when the fan kicks on and off, would that be ok? 2. What temperature should neon tetras be kept at? 3. I've also heard that they like low pH, mine is 7.6, would that be ok? 4. I have LED lighting in my aquarium on for about 8 hours, are they ok with bright lighting?