GH Calculator??? EC readings??

V

Virginhydro

Active Member
Hey everyone,

Today i did another reservoir change to full Bloom, my reservoir is 20 gallons, so according to the GH calculator i needed to add, 200ml of Micro, then 100ml of Grow, and then 300ml of Bloom, which i did just that. Now their calculator says that my TDS reading should be 1460ppm, but my Hanna HI 98302 Dist 2 EC meter, calculated on a .5 TDS factor read that my reservoir was at 1.29EC which would be 645PPM?

What am i doing wrong here?

Thanks
 
H

henery

Active Member
Well your ppm strength depends on plant stage of growth if your plants are not blooming hardcore that seems nice and week so you are ok!
And that reading seems about right to me 1-2-3 mixture with 20 gals!
 
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