Do I need to worry about ORP?

[ShaggyRS6]

So I got the APEX setup this evening. Just the probes, not pumps or anything like that. Everything looks great apart from the ORP that's running at 145. I will say it was at 270, then I feed some roids and phyto.

 

[ca1ore]

Not many things more useless than ORP .... unless you’re running something like ozone or a sulfur reactor.