So I just did about a 25% water change in my tank. I don't have any hoses or anything so I just used an old container and a 5 gallon bucket. Naturally, when pouring the water back in, the sand mixed up and now is all over the place. I know my filter will fix this with time but my question is, will all this sand floating around hurt the fish? My next question is, what exactly do I need to buy to do my water changes without using an old container and a 5 gallon bucket? My final question is, how can I lower my ammonia levels in my tank. It's at about .5 ppm. Someone told me a larger water change like this should do the trick.