Q & A

Welcome to the Planet Natural Garden Forum! Whether you’re new to gardening or have been at it for some time, here you can search existing messages for answers to your questions or post a new message for others to reply to. If this is your first visit, please read over our forum instructions carefully before posting. Enjoy!

#282964 Reply

E. Vinje
Keymaster

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!