It is important to check your pH level every time you water your garden. If you are using a timer to automatically water, you should check it daily. When growing in soil you do not have to adjust pH level as often as when growing hydroponically. Typically when growing hydroponically you want your pH range to be between 5.5 – 6.5, depending on your crop and/or genetic type. When adding nutrient to your reservoir it is important to test pH AFTER all the nutrients have been added. This is because your nutrients will increase your pH level. If you pH test as the last step, you know and have control over what the pH is.