eduller said:I use a python/siphon to change the water in all my tanks. I got one of those patch kits for a vinyl window screen and made a little sleeve of the screen material to go over the end of the siphon, held in place by a rubber band. It not only prevents any fish or gravel from being sucked up, but it also helps dissipate the current when I fill the tank back up so it's not one big splashing rush of water. One of my bettas used to do everything in his power to try to get sucked up into the python. He succeeded once (without injury, luckily), and then I devised the window screen "baffle" for it.
Sounds interesting!
Is it possible you may post a pic of this, so i know exactly what you mean.