High ppm levels but sticking to chart

B

Blackcat01

Member
Hi guys wondering if anyone can help,
currently using GHE nutrients mixing as follows;
1.8 grow
1.2 micro
0.6 bloom
1.0 cal mag
All per litre
This is what it states on the back of the bottle but I am coming out at 2900 ppm! My water is 290 ppm to start before any nutrients. I understand I should be feeding around 900/1100 ppm at week 3 stage.

how is this correct if the Ghe chart comes out at 2900 should I stick to the chart and risk high ppm problems? Or should I dilute and feed lower nutes around 1100 ppm?
Thanks
 
Star Dog

Star Dog

Well-Known Member
If you google you'll find some household item with a fixed or predictable ec to test it, falling that calibration fluid.
Blue lab ppm truncheon is ideally what you want it's the benchmark in meters, I know some folks will disagree but imo a quality ppm is absolutely essential in hydro.
Blue lab truncheon #1
 
Hollatchaboy

Hollatchaboy

Well-Known Member
Star Dog said:
If you google you'll find some household item with a fixed or predictable ec to test it, falling that calibration fluid.
Blue lab ppm truncheon is ideally what you want it's the benchmark in meters, I know some folks will disagree but imo a quality ppm is absolutely essential in hydro.
Blue lab truncheon #1
Click to expand...
Personally, I like the guardian for dwc. You can keep the probes in the res. :bigjoint:
 
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