Since I know what sand you're getting, I'd say its a non issue. He washes it well, and there was no clouding at all when I filled my tank. A piece of PVC
(used like a funnel) would probably make it easier to add with the tank full of water though. It'll still cycle the same without it. Many people have started going barebottom with their reef tanks, so it's not a vital part of the system.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry