Hi Locedd,
one way to lower pH is to buy some citric acid from a
Health Food store so you know it's organic. Two fingers width amount
of citric acid in the bag will last you for 2 grows or more ! It changes pH
with just a pinch in 10 gal. bucket of water. So this stuff goes a long long way.

You can even use it in food and drinks for your own health benefits.

Zeff.