I made a my own drain line with a 25 foot section of 1.25" vinyl hose from the hardware store and a homemade pvc hanger with a strainer. The pvc is cut to length so it only drains to the level I set it for and breaks it own siphon, and I just drain it out into the yard. You won't regret how fast this method is over smaller diameter hose. I then have a 6 foot section of garden hose adapted to a barb fitting that I can quickly attach, or detach from the vinyl hose to refill right back through the same line. This is a huge time saver for me having to do 8 tanks. Then I do a deep clean and gravel vac periodically, but if I'm trying to knock out some water changes and save time, I can do all my tanks with glass cleaning in a couple hours this way.