I've seen the comment in a number of threads that having borates up at 60 ppm or so tends to make a pool less susceptible to algae attack. My question is whether one can approximate that level by simply putting in a certain amount of borax into a known volume of water?

In other words, if I imagine a million pounds of water (the hypothetical 120,000 gallon pool often mentioned on the forum), how many pounds of 20-Mule-Team borax powder are required to achieve 60 ppm of borates? I'm sort of assuming it's something more than 60 pounds... Or is it really that simple?

The reason for the question is that we'll be leaving our little (1000 gallon) pool to its own devices for a week of vacation soon, and I had thought of experimenting with higher borate levels (along with shock levels of chlorine before departure), to see if we'll come back to something better than the usual post-vacation mini-swamp