drying out old sand inside or out?

[corpusse]

I'm currently washing out about 300lbs of sugar sized sand and a little bit of courser stuff. I took this out of my 90 gallon garden eel tank and replaced it with 240lbs of new sand. Unfortunately I had to move the tank so I can replace the carpet.

I will eventually be moving so I want to keep the old sand. Rinsing the old sand still resulted in 3 days of tank cloudiness so washing out the old sand does not seem any more labor intensive then the new sand, but this time I'd like to do it properly. I'm not even 1/4 of the way done and I've had the hose on for hours. I'm thinking I will pour all the sand in a rubbermaid and let it dry out and then move it into 5 gallon buckets which can be portioned to weigh 50-100lbs and manageable. Once I put this down that's it until it dries. Outside I am concerned about bugs and dust. Inside I am concerned about 300+lbs of sand drying out for who knows how long on the floor.