That's why I was asking for the that info -- so I could advise you better.

Probably your best bet is to keep boosting to near 30 ppm, and hope it's under control when you leave. If you want to take an additional step, borates over 60 ppm permanently inhibit algae, although it's not as effective against mustard algae.

You don't really have time to lower phosphates, if you are leaving this week. That requires that you have sufficient phosphate remover AND can test accurately. It's useless to lower PO4 levels from 2 ppm to 0.5 ppm (500 ppb): it only begins to be effective as you go below 0.2 ppm. The target is 0.1 ppm or less.

But you can raise borates quickly with boric acid: just dump the correct amount (or more) in. Some small pH adjustments may be needed after.

I just finished a dosing guide: http://pool9.net/chart/vacation-dose/ ; there are links to the products in the chart.