Best way to add 4 pH/orp probes?

[Gordonious]

I have a full Apex and a couple of PM1s and would like to add 3 pH probes and an ORP probe to the set up for separate tanks. Is the best way to do this to add four more PM1s?

[RussM]

That is your best option I think. The only other possibility i can think of is to find a couple of used PX1000 modules. Each PX1000 has temp port, pH port, and a modal (selectable) ORP/pH port. You can still buy new ones, but at $175 each at most online resellers, the PM1s are more cost-effective. ReefGeek lists them as clearance items @ $125, but for the small difference compared to PM1s, I'd still go with the PM1s.

[Gordonious]

Thanks Russ. It looks as if the PX1000 listed on reef geek includes a temperature probe. Only question I have is the temp probe one of the older ones that they had issues with and replaced. (remember seeing some issues that were solved with the newer temp probes, can't remember specifically what it was, perhaps unshielded cables?)