i have been looking at different type of probes to check water chemistry. i have noticed that there are a number of different monitors (pH, ORP, salinity, etc).
1) what is an ORP probe?
2) are there any monitoring modules out there that can do all the water chemistry tests in one unit? for instance, is there a single unit that can do pH, ORP, salinity, ammonia, nitrates, calcium, etc?
3) can i get recommendations on makes and modules of monitoring units?
- 75 gal
Amiracle SL-350 Wet/Dry (no bio-balls)
AquaC EV-180 Skimmer w/Mag 7
2ea Maxi-Jet 1200 & 2ea Maxi-Jet 900 PH
Captive Purity Refractometer w/Calibrator
LCD Digital 250 W Titanium Heater
48in Coralife 4x65 watt PC
Won Pro Heat II
Tunz level alarm
Approx. 200lbs Sand (3-4" DSB
unit - 110 GPD
Please feel free to advise me!