With respect to @FuAn post. It's a strange world...For the service industry in general, Europe and other places have a very different way of doing things. I'm used to tipping well for good restaurant service in the US, but I've gotten strange looks for trying to leave tips in Europe and elsewhere.
Regardless, for dives in the US, I shoot for at least $10/tank. The mates work really hard and don't get paid very well.
Regardless, for dives in the US, I shoot for at least $10/tank. The mates work really hard and don't get paid very well.