The rubber washers usually used in hose connections at the pump. It never leaked on me and I don't think it would unless you forgot to use the washers (or used bad ones). The end that goes in the buckets (draining and filling) are just hose ends. Though, I guess you could rig a connection. But, that seems like too much work to just do a water transfer.
This or a bucket head shop vac. I've used both. They'll both do what you're looking for. This one is quiet and runs on 2 "AA". Sent from my SM-N950U using Grasscity Forum mobile app
Assuming you have ~4gal in a 5gal bucket, it's less than a minute. It'll leave 0.5-1" of liquid in the buck unless you tilt the bucket. The bucket head shop vac is less than a minute also and won't leave that 1", but again, it's louder. Sent from my SM-N950U using Grasscity Forum mobile app
This thing sucks ass lol I have the same one...it’s slow as hell and eats batteries fast. Ultimately it does come in handy! Sent from my iPhone using Tapatalk
I use a whale pump, easy bailer 55 manual bilge pump, it shifts over 8 gal per minute (30L plus) and leaves less than 1/8" behind. I modded the outlet for direct bucket to bucket transfers but it comes supplied with a flexible hose. ..