Yes, go to your local fish store and buy a ph test kit, comes with ph up and down and test drops. Depending on size of resoirvoir, you want light green colour for your water ph level. You could get a electronic ph meter too. either mail away for it at a hydro garden store or you can take a cab to a local hydro store and they got it all...meters, up, down and all around...but dont park your vehicle right out front take the cab.