Q & A

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Eric Vinje

Hi Mark –

The ideal pH range for most hydroponic crops is between 5.5 and 6.5. However, we do not have a recommended table for adjusting pH. According to General Hydroponics you should start out with one milliliter pH Down per gallon. Wait 15 To 30 minutes, and test your water again. Frequently you will only need 1 to 2 ml per gallon of water. You may need additional pH Up/Down if you have hard water.

Hope it helps!