I have a 10 gallon tank with a male betta and two nerite snails. 10 days ago I did a 50-60% water change. I usually do this every week on the same day, but it totally slipped my mind until now. Today I went to do a water change but I noticed the tube of my siphon has mold growing inside of it. I am putting in an order on Amazon prime right now for a python water changer to make water changes less messy. My question is, how should I go about doing a water change today? I dont really qant to take any chances wjth the mold getting in the aquarium water, as I imagine this isn't good for the fish. Should I just wait until the Python is delivered on Friday? Or should I do a water change using some of the Tupperware we have at my house? I don't really want to put off the water change, but we don't have anything tupperware or cups in the house that hasn't been cleaned using soap. So I worry about soap residue hurting the fish. Should I go to a pet store/fish store and just buy a new cheap siphon today? Thank you, and sorry this post is so long!