HI2500 Suggested Installation Diagram HI2500 Tank Set Up pH and Ec Controllers monitor and precisely control the injection of fertilizer and acid based on feedback from electrodes in bypass loop HI2500 – Precisely Controls fertilizer and acid injection. Up to 3 stock tanks can be utilized for multiple crops and customized blending. Controls the injection of 2 fertilizers and one acid/base. Supplied with 3 sets of suction tubing and foot valves for fertilizer connections. Mixing tank, level controller, fertilizer tanks, circulator pump and related plumbing as seen depicted not included. WARNING: TO AVOID POSSIBLE SIPHONING OF ACID ENSURE THE LEVEL OF THE ACID TANK IS BELOW THE LEVEL OF THE MIXING TANK AND THAT AN AIR GAP EXISTS BETWEEN THE MAIN RETURN LINE AND THE MIXING TANK LEVEL AS DEPICTED. Peristaltic Pumps Drip Fertilizer and Acid directly into Mixing Tank Electrode Holder/Bypass Loop Ball Valves for flow control Water Supply Valve To Plants Circulation/ Irrigation Pump Mixing Tank Acid Tank Fertilizer Tanks