I Need Your Opinion on Hydro Ph for Flowering

NEVER OUTGUNNED said:

so wait a minute, the chart says above 5.5 cuts off Phosphorus and magnesium, the two most critical nutrients. everyone hear says keep it at 5.8? also the ppms get as low as 5.2, they hit 4.8 for the first time yesterday. 1800 was a first run yesterday, normally i keep them at 1500, but they munch up 200-400 the next day.

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Smaller rez equals wild PPM and pH swings. I run 12 plants off a 15 gal rez in budding stage and life is easy for top off. Nutes usually lower pH, and my rez is big enough to keep my PPM at 1400 and pH at 5.80ish with a 2 gal top off every 3-4 days with no pH UP. That's the trick: a big enough rez to keep the top off easy without messing with pH.

NEVER OUTGUNNED said:

so wait a minute, the chart says above 5.5 cuts off Phosphorus and magnesium, the two most critical nutrients. everyone hear says keep it at 5.8? also the ppms get as low as 5.2, they hit 4.8 for the first time yesterday. 1800 was a first run yesterday, normally i keep them at 1500, but they munch up 200-400 the next day.

Click to expand...

In DWC I run 5 gallon buckets and ppm should never be above 900 and usually stays around 700.