I have the probe downstream of my co2 intake and it doesn't seem to make a difference. It still works great. 
Brian
__________________
Brian
Equipment: 55g, 3x 9watt tt uv, 2-xp3's, pressurized co2, inline co2 reactor, 216 watt catalina t5 fixture, milwaukee ph controller, 300 watt hydor inline heater, aqua soil
Filstar Pimp #100
|