Sup nerds, Try citric acid for ph down it only takes a pinch, also baking soda for ph up. My water is always a 6.5- 7(yes i still check it every time i use water) Yes Im lucky. Glad you brought that up Sub(about checking ph of water). This is something alot of new growers dont do.A ph test kit only costs a few dollars and is well worth it. To me ph pens are more trouble than their worth unless your into hydro. Also i always use distilled water for sprouting seedlings it cheap, the ph is 7, and its very clean with no chloramine.(avaliable at your local walmart for under a dollar a gallon) Also use it for (cooking) supersoil. Peace