fishin4cars
True friends just call me Larkin
Oh, you have almost perfect water! you'll need the oyster shell as Addy suggested but that should get you right up in the correct range no problem, You may see a little ph increase which will be fine. what you will want to watch as your pond ages is that the KH doesn't get below that and that the PH stays above 7.0, going a liitle below won't hurt the fish but it is s sign that the OH could crash. water change and a little baking soda would fix that easy. And no added chlorine and such chemicals. NICE! Oh and as for the underlayment, the more bigger wrinkles that you get out the easier to do the liner, but by far they don't have to be all neat, I just suggest that to get practice for the liner. If you have been practicing with the tarp same principle. Your welcome to help me do my big one when your done!