Don't go with the USG Easy Sand 30, 45, or 90 It will get away from you and set up in the mixing bucket.
Use the USG Green (lid) and the Easy Sand 90 together.
use a separate 5 gallon bucket to mix in. Put about 1/4 of a bucket of the USG general purpose ( green lid )in the mixing bucket, then add in 1/2 of a 1 pound coffee can of the Easy Sand 90 and 1/2 of a coffee can water, mix with a power mixer ( even a paint mixer ) on a drill.
Let sit for a few minutes and have at it!
you can add a tad more water or a tad more Easy Sand powder till the mixture is how you like it. The Easy sand is dehydrated joint compound and plaster of paris. It accelerates the drying of the mud. It's Hot Rod Spackle, it goes fast.:burnout: