I know there is something out there that can test the PH automatically and then add a PH down liquid or PH up if needed on a regular interval. I for the life of me can not find it.

Any ideas on what it is called so I can search again?
LordDrow Reviewed by LordDrow on . Auto PH feeder?? I know there is something out there that can test the PH automatically and then add a PH down liquid or PH up if needed on a regular interval. I for the life of me can not find it. Any ideas on what it is called so I can search again? Rating: 5