Quote Originally Posted by wh33t
Is there any reason I shouldn't use chemical PH down? Where do I get acidic peat? How do I apply it?
You can use HCl or hydrochloric acid, which you can probably find at your pool or hardware store sold as Muriatic Acid. PLEASE, be EXTRA careful and read ALL directions. Depending on the concentration, this stuff can literally melt your face off. Don't smell it, and always pour SLOWLY. HCl pretty much has no buffer capacity for your pH; so, you will see it drop. A gallon of this stuff usually runs less than $10 and is found in concentrations from 10% to over 30%. You won't need much to change your pH... but again, I would suggest just letting the system sit without messing with it much.