Ph And Ppm Meters-how Much $?

[J Henry]

They say you need to keep track of your PH and PPM in DWC/RDWC grows and you got to buy these meters and test Ph and PPM in the res water.

So, what brand Ph and PPM meters are popular and how much do these meters cost?

Why can’t you just look at the plants and roots symptoms and just guess what to do with the PH and PPM’s?

 

[DemonTrich]

How can you guess by looking at the water what ph it is? By the time tour plants react to a bad ph level it may be already too late. Then your just chasing your tail playing fix the problem.

I like HM meters. I own 2 for the past 3 yrs. Never fail.

DO NOT buy the cheap ole red or yellow ones on Amazon or eBay for cheap. They last for a week only. I went thru 12 in 1 yr then I wised up.

 

[gwheels]

Bluelab PH pen and a quality waterproof TDS pen are what I went to. The cheapos sucks. The good ones work and they are waterproof. My grow has improved significantly since I upgraded both of them.