testing water

[inthedeep2]

just curious I know ph is affected but any other water tests affected when testing with the lights off?

 

[thegrun]

None that i can think of (but it's a lot easier to read the results with the lights on:beer

 

[inthedeep2]

LOL well I know that one.
I wasn't meaning the room lights I meant the tank lights...

 

[bertoni]

The pH might drop some after the lights have been off for a while, but nothing else is going to change.

 

[thegrun]

LOL well I know that one.
I wasn't meaning the room lights I meant the tank lights...

I know, lol, pH is the only parameter that should change

 

[gpdno]

ORP - If you measure ORP (Oxidation Reduction Potential) this will also be affected by your photoperiod and will generally track opposite to your pH.

 

[bertoni]

Oh, I forgot about ORP. It'll tend to rise when pH drops, and vice versa, all other things equal.