Great!

But be careful -- most Intex type pools come with a hose pressure driven venturi type back that drives large debris and leaves into a mesh sack. This type of tool will NOT help.

Go to Walmart, etc. and get a vac head, a pool and a hose long enough to reach from the middle of your pool to 6 - 8' OUTSIDE your pool. Overfill your pool, let everything settle, and then start a siphon in the vac hose that will drain water OUT of the pool, via the vac head. Then move the vac head over the powder (slowly enough to not stir things up) and pull the powder out.

It will probably take some practice to get this right, and not drain too much water.