How long does the frozen bottles of water last?
You are correct, this is corrugated drainage hose.That is corrugated drainage hose, right? Or did you buy solid hose and drill holes?
My machine is a 400 watt also,I am sure yours will work fine.That's a great idea. I've only got a 400w fog machine so I don't know if mine would put out that much fog that quickly. Looks like your machines are powerful.