SOIL: 6.8
HYDRO: 5.5

A little off from those would be OK.

It may take a little experimenting to find the right water schedule. Everyones set up is different. Just remember the key: Keep the roots as dry as possible without stressing the plant. If your roots are rotting, then obviously they are too moist. I use clay pellets and water for 30 seconds every 10 minutes, but am thinking of trying every 15 minutes.