PH Drops when lights turn on

[reeflover2]

My PH drops everytime my lights turn on. I have no livestock in the tank as it is new. What would cause the PH to drop when the lights come on?

 

[jacob30]

If it does it within a few minutes or instantly it could be some electrical interference from your ballast or light powercords causing the change. If this is the case re-route your Ph probe or powercords. I have seen the same thing with an ORP probe and it was the lighting powercords.

 

[sherm71tank]

Doesn't sound right at all. Your ph should rise after the lights are on and fall after off. I would also suspect some type of electrical problem.

 

[reeflover2]

The PH drops slowly over the course of the lighting schedule. Then the next morning the PH is back up again. It is shifting like 1 - 1.5. The light wires and powercords are not even close to the probes. They are all ran through the ceiling.

 

[sherm71tank]

Are you dosing kalk at night?

 

[reeflover2]

No