What meters do i need??? Ph and TDS??

[Comatose]

this might be a dumb question but what is %RH reading ? Thanks in advance

:smokin:

Not a stupid question, friend. %RH stands for percent relative humidity. Our friend MJ has a range that the %RH should be in during veg and another during flower.

Comatose Reviewed by Comatose on 09-26-2007. What meters do i need??? Ph and TDS?? Somone please tell me every meter you need??? I have ph and i am about to purchase a tds meter....anything else?? Rating: 5