I didn't use a diatom filter, but tried a similar method using a quick filter attached to a Hagen powerhead. That didn't work.

But, I can say that leaving it alone for 2-3 weeks seems to be working best. I'm on my 3rd ignore attempt right now (previous two attempts only up to 14 days max, and GDA returned each time, albeit not as bad as before), and after a little over 2 weeks, I only see very small patches of GDA left on the glass. It definitely seemed to have cleared up on its own.