LeastExpectedGrower
Well-Known Member
Anytime I've measured Maxibloom for EC by the gram I come out around ~.22 EC, so if you're not adding any additional things to your mix (I add Ca/Mg & a bit of extra epsom), you're hitting 1.50 EC or more at 7g.
GH Maxi series question ?
- Thread starter chuckeye
- Start date
Billy the Mountain
Well-Known Member
It's even higher; 7g of Maxibloom is ~ 2 EC + water EC
LeastExpectedGrower
Well-Known Member
I think discussed this before...My Maxi never reads as high as your numbers. I've tried 3 different EC meters and a few scales, and a few different methods (making sure it's totally dissolved) and I always end up with ~110ppm/.22 EC per gram.
Billy the Mountain
Well-Known Member
Interesting, no idea why such a discrepancy
I'm using a com-80 EC meter, calibrated with 1.0 and 2.0EC calibration fluid
Currently, I'm using 3g/G Gro + 3g/G Bloom for my hot peppers; works out to ~2.0-2.1 EC with my .3EC tap
The GH feedcharts claim even more potency as far as EC per gram
5.5g/G = 2.2-2.6 EC
4.4g/G = 1.6-1.9 EC
3.9g/G = 1.4-1.7 EC
LeastExpectedGrower
Well-Known Member
Yeah, I have no idea, but also no reason to not trust the Bluelab EC meter, especially since it seems to match the other 2 cheap ones I own and is also properly calibrated. I guess it's possible that the bag of Maxibloom I have slipped through QC. I have a second bag (from a different vendor), but I haven't opened it since I hate to do that unnecessarily to avoid any clumping.
I've been using water that's filtered, or dehumidifier condensate both of which are reading 0ppm/0EC on all meters as well.
Billy the Mountain
Well-Known Member
Just for curiosity's sake, when you state 0.22EC/g/G are you measuring 1g/G or measuring say 5g/G and dividing by 5?
I ask because its possible that the meter is not as accurate at low EC values, particularly if it was calibrated at 1EC or whatever.
LeastExpectedGrower
Well-Known Member
I've done both ways, and ended up with the same result.
chuckeye
Well-Known Member
Answer from another forum 
If anyone is interested I will update progress in My Current Sativa Grow
Thanks Everyone for your replies !
Cheers
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If anyone is interested I will update progress in My Current Sativa Grow
Thanks Everyone for your replies !
Cheers
I started two 3 Bears OG on Jacks 321 and will switch to MaxiBloom soon.
I get the same EC as you. I just mixed a gallon of RO, 6 grams = 1.7 EC.
My two Com-80's were calibrated with both purchased cal solution and my own mix with sodium chloride, same result. Thanks for the salt tip.
