Digital pH meter on Amazon


I catch my runoff in a pan. I collect that water with a turkey baster. I water until I get enough runoff to fill 1 1/2 solo cups. I discard the first full solo cup and test for my PPM’s and PH in the half full solo cup.

For ph down I use general hydroponics PH down.

Yes, you’ll want a humidifier if your RH is that low. You can put a bowl of water in your tent and see if that will raise your RH enough.


Awesome! Thanks! @Bobbydigital


Ok, so, curiosity… why do you discard the first solo cup?


@blackthumbbetty just got a barely used pc60 off ebsy for 70. none of the chemicals were ever opened. Can the temp be changed to farenheit?