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500 scale that is for ppm

Pen says 500 more. It says it's an ex meter too. But that number say 2380 So don't flush with straight water. Thought that's what you do for lockout? I'll just take out half of rez, since I just changed. Too off with ph'ed water. Then next Rez change I'll go half strength and see how it goes...

my god have I been nuking the hell out of em? Got a cheaper ph pen, not the cheapest. Calibrate every couple weeks with the powder and been pretty close each time. Didint know anything about scale. Ppm says 1100. Other measurements says Us/cm 2380. Now clue what that is honestly. 10-15 years...

Had a little root rot in veg tent dwc before I got a bigger airstone pump. Hydrogen peroxide for that. Picked 4 flavors for other setup rest outside. After last crop that only 2 of 4 survived. I built a new setup and used little bleach for pumps and lines that were used before. Cleaned tent out...

I'll cut out the cal mag. Anything I should do to help before? Run straight adjusted ph water? Does that help "flush" and help with lockout? Do that for a week and then change rez minus the cal mag?

Week before last change ppm dropped from 1100 to 900s ph was steady. Last change couple days ago ph dropped from 5.8 to 5.5

I've narrowed out heat, light, and over watering (rdwc) I don't THINK it's over nutrients, ppm 1100 Was told calmag deficiency. Was using 3ml a gallon instead of 5 cause I am using tap. But when I ran ro I was using 5ml and still same issues. Using a smaller tent with some t5 lights and a 10gal...

Is it too much cal mag you think? Someone told me it's not enough lol. Last run using RO I had some of same issues. Running few different strains. This one the worst. Others are showing signs and would like to figure out.

Rdwc airstones in all buckets. Rh 55% temp 80 general hydroponics just doing Lucas formula with cal mag at 3 ml a gallon. Was using ro water but switched to tap with a dechlorinating filter. But that was only recently and have had this before. ph 5.9 1100 ppm. Recalibrated ph pen and double...

Just got a tent together for first time in 15 years. Tried what a put together then. Basically 4 buckets with sprayers, drained to rez. No medium, a cheap version of aero. Buddy gave me 4 ready for flower. Killed 2 and ready to chop another dying. Left for vacation and had another friend top...