Inputs to record/use from tank

Trying to get a list of inputs I would like to pull from the tank for recording and controlling of tank parameters.

Temp
pH

Anything else I’m missing? in the future?

Salinity/conductivity
ORP
Dissolved Oxygen

Any idea on pricing for those units (with output)?

No idea, just some things I have seen mentioned as having monitors avalible for.

Gotcha, I’ll add them to the potentials list, but probably won’t use them because of cost.