Apex ph or orb

[pastelball]

I have the jr. looking to add the pm1. Not sure if I should add the ph or the orb probe. Looking to see what every one thinks.

 

[Cory]

Id go for ph than orp if you don't already have ph. Orp really doesnt mean how pure your water is anyway. And seawater orp can be low even in pristine condtions.

 

[trido]

Orp isnt nearly as important as your Ph. Unless you plan on using ozone. Definitely start with a Ph probe.

 

[hybridazn]

Ph without a doubt.

 

[pastelball]

Thanks, I will go for the ph.

 

[Harry_Y]

Another vote for ph