It's your pool--you can do whatever you want.

I suggest you run some tests first to see if you get the same results. You CAN get re-agents from Taylor directly, or Taylor re-Agents from Leslies on-line.

The OTO test can be boosted by diluting pool water with steam-distilled water. If you mix 1 part pool to 1 part distilled, you double the reading--so an OTO reading of 3 ppm means it's 6ppm. If you use 2 parts distilled to 1 pool, then a reading of 3 means you have 9ppm.

Generally, though, it's a bad idea to mess with the amounts. But, as I said, it's your pool and your responsibility.