conductivity meter ?

MesaBoogie

We live to survive our paradoxes
Gladiators
May 25, 2018
873
2,965
10
Canada
Are you building your own lights ? Not sure what you would need to check conductivity for otherwise. You can get a decent one just to check conductivity for under $30.


Edit: oops I guess bumped an oldie post
 

Simplicio

Auto Warrior
Aug 19, 2017
822
1,581
0
Necessary or not ? what type to get ? What to spend ?
Electrical conductivity meter, tds meter, ppm meter are all pretty much the same thing.
They only differ in what they read out.
Such meters are essential for hydroponics.