Bottom screw hole but I'm sure you can top fill the old Kayfun method and then flip it to stop it from flooding when top filling .@Vash How does this tank refill?
Yeah I feel ya lol, this thing is so big I figure won't have to refill constantly so worth trying outThat's what I thought, I hate to have to carry a screwdriver around to refill. The reason why my Monster V3 is benched.
Good to know thanks buddy , even with bottom fill I've always got syringes lying around lolIt's not to top fill friendly compared to the kayfun. But you don't have to fill it more than once a day