Nutrifield PH Up & Down - 2x1L
Nutrifield PH UP & DOWN - 2x1 Liter
pH Up & pH Down are tank controllers that assist in reaching the desired pH level. The pH scale measures how acidic or basic (alkaline) a substance is. It ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic (alkaline).