Higher temps = more water evaporation=more watering=more growth?
- Thread starter Dcappello
- Start date
Rurumo
Well-Known Member
Fertigating multiple times per day does increase growth by maintaining optimum nutrient ratios at the root/soil interface. And yes, warmer temps do increase transpiration-ham is right, optimum temp depends on if you are using LED or HID-you want to go by your leaf temps and you should look into VPD if you haven't already, to see the relationship between leaf temps and RH%.
Star Dog
Well-Known Member
If there was more transpiration caused by heat or low humidity you'd need to alter your ec accordingly.
Thanks for the tip
Great info! This is what I needed! Thank you very much I can always rely on this forum for great advice
VincenzioVonHook
Well-Known Member
@Jjgrow420
Think 2.6ec is high? Just watched something on growers network and they claim to be running high 4s to mid 5s.
Seems absolutely insane lol. I always get confused as I'm never sure what scale people are using. 2.6 EC could be anywhere from 1300-1800ppm.
Think 2.6ec is high? Just watched something on growers network and they claim to be running high 4s to mid 5s.
Seems absolutely insane lol. I always get confused as I'm never sure what scale people are using. 2.6 EC could be anywhere from 1300-1800ppm.
OldMedUser
Well-Known Member
EC is EC. It's the ppm scales that vary with different makers scales. I have two ppm pens. One is a Hanna I bought for over bux back in '82 and still works but tends to drift and reads 10x. The other one is a TDS EZ by HM Digital that reads 1x up to 1000ppm and also uses the 0.5 scale. I calibrate that one with 1000ppm calibration fluid I've diluted to 20ppm and use it to measure my colloidal silver batches. You have to multiply by 2 - 2.5 to get a ballpark ppm for that but it works and hella cheaper than buying it. I figure 12 - 15ppm.
VincenzioVonHook
Well-Known Member
Yep. They all measure EC and do a conversion from what I see. It just gets so confusing sometimes lol. Chart helps though. Cheers.EC is EC. It's the ppm scales that vary with different makers scales. I have two ppm pens. One is a Hanna I bought for over bux back in '82 and still works but tends to drift and reads 10x. The other one is a TDS EZ by HM Digital that reads 1x up to 1000ppm and also uses the 0.5 scale. I calibrate that one with 1000ppm calibration fluid I've diluted to 20ppm and use it to measure my colloidal silver batches. You have to multiply by 2 - 2.5 to get a ballpark ppm for that but it works and hella cheaper than buying it. I figure 12 - 15ppm.
View attachment 5127274
Last edited:
OldMedUser
Well-Known Member
The conversions are for TDS pens that output in ppm so if a guy has a different one they can convert as needed to compare with others. 1.0EC is 1.0EC no matter who makes the pens so no conversions needed if talking EC only. If I guy asks me if his EC is OK then I look at the chart, one printed in a folder at hand, and see how that works in ppm which I grok better. Then I can convert back and tell him what EC I would use. It's magic!
They both read the same thing. EC is Electrical Conductivity. The stronger the nutrient mix the higher the reading. They just output the data with different scales. Like °C or degrees °F. You get different numbers for the same temps except for -40 where both scales are equal.
amneziaHaze
Well-Known Member
She can eat only a certin amount.that said you can get higher growth or overfeeding.
It has been proven that plants will eat double more if you go organic
OldMedUser
Well-Known Member
You can do that but you need to maximize other variables to make it really work.
More light as the plants use light to process the nutrients they get. High nutrients and not enough light will end up with nute burn or worse, the dreaded toxic salts buildup that starts to turn leaves all crispy and brown about mid flower and ends up in the little leaves. No fix for it once it's well established.
Plants also need more CO2 for the carbon to build more plant tissue with so a source of that helps a lot.
I do that stuff during the stretch as they eat double or more then but after I cut the CO2 and let the temp stay at 75 where I'd let it get close to 90.
It's like souping up your bike then white-knuckling down a windy road thru the mountains. All fun and games until you make a wrong turn and the ride's over.
Good luck!
Star Dog
Well-Known Member
Yes higher transpiration would mean you would need to lower your ec.
Your plants uptake is directly related to your environment, if have low humidity or higher temps the plant takes up more water/nutrient to compensate, the water can evaporate off but the excess nutrient has nowhere to go and that's the start of issues.
For any given conditions plants will only metabolise x amount per day anything more isn't conductive to good growing.
Ime 2.6ec is way too high my plants have never ever needed 2.6ec even with near perfect conditions and 50w+ psf of light.
twentyeight.threefive
Well-Known Member
The scale doesn't matter. 2.6 EC is 2.6 EC. That's why using EC as a measurement is so much more useful than ppm, there is no ambiguity.
Jjgrow420
Well-Known Member
Double more huh
VincenzioVonHook
Well-Known Member
That's what I was confused about. Sorted now. I always had people give me different ppm when I used EC and I couldn't figure it out until now lol.
amneziaHaze
Well-Known Member
i am too high now. but i posted one reaserch mineral goes 160ml and organic 320 or more. that she will eat in a day it was done with 10 clones
Billy the Mountain
Well-Known Member
By whom?