I am on my third week into my first grow and everything is going well but I am anticipating some issues.
First, I am transplanting into gallon pots (from Solo cups) very soon. Using distilled water will soon be not practical. Can I use tap water (city) if I let it set out for a day or is there something else I should do?
Second, I purchased the PH tester shown in the pic below. It was pretty inexpensive and I have no reason to believe it will not work but the more I read these forums the more I realize PH is very important. Is there a better product I should have?