Hi, Gang! I have a Python syphon and water filller. Itās a god send with 8 tanks. However, I recently dealt with columnaris in a tank and donāt want to risk cross contamination. Right now Iām bleaching the Python between tanks and rinsing with Prime. A lot of work and added expense. Does anyone use or recommend a syphon/water changer that is less expensive than the Python? Iād like to eventually buy one for each tank if I can locate one at a good price. Several of my tanks are large and in the den so bucket fills are not an option. Thanks for any help you can offer!