I don’t think a PH or TDS pen is needed when you starting out, provided you start with an easy to grow, beginner strain which is your best bet. I’ll probably be getting a PH within the next 2 weeks because I have changed strains and these new strains seem much more fussy about the enviroment.
Getting some very light bronze color on some leaves but I know its not lack of nutes or burn so it must be PH or something else.
Could you explain what a TDS pen is? and also how to use a PH pen. I’ve contacted some stores and now I’m not sure what PH pen to get. I can get 1 that you stick directly into the soil and 1 that you stick into water so I’m not sure which one is better.
If I do get the water PH pen, how would I measure the PH at the root zone?