Pentair IntellipH (pH controller) - any one use it?

[JimK]

I found Boric Acid on Amazon (the pricing is all over the place) for a best price of $22.90 for 10LBS. I see that Boric Acid is used as ant/roach killer. Is this stuff all the same? Do I need to look for certain purity or anything. Is the bug killing Boric Acid the same as the pool use Boric Acid?
Thanks

This is what I use

http://www.chemistrystore.com/Chemicals_A-F-Boric.html

I buy the 55lb size.

Others on the forum have also recommended this

http://www.dudadiesel.com/search.php...FYhcfgod98oBrw

In a 20k gal pool with no borates it will take about 48lbs of boric acid to reach 50ppm.