Correct pH 7.0, 8 ct by Tetra $4.19 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity We are currently experiencing temporary outages for select pet products due to vendor shortages out of our control. We may contact you after placing your order to make substitutions or to update you on your order. We apologize for any inconvenience that may cause you. Add to cart Maintains neutral ph in community aquariums. Reduces fish stress due to changes in ph. For all freshwater aquariums.