Lime, baking soda and woodash are all good for raising the ph. Vinger, lime or lemon juice will lower the ph. If your well water is running at 8 you are too sweet in your soil. If you want a truly organic solution try oak leaves or pine straw in your water. Get a ph tester to test your water. If you have a barrel fill it up with water and put the leaves or pine straw in and then moniter the ph until it is lowered to about 6.5 to 7 for a soil grow. Good luck with your grow.