rkymtnman
Well-Known Member
i'm at high altitude and my plants burn easily. i don't go above 1.0EC usually for the whole grow.
burn at so low PPM
- Thread starter SamWE19
- Start date
Thank you for saying that for my sanity it explains a lot. I'm currently at 0.96 ec
I'm very low altitude only 50m above sea level but I have low humidity would that cause it?
MrStickyScissors
Well-Known Member
Get the ro stealth 1000. 1000 gallons a day
rkymtnman
Well-Known Member
i'm low humidity too so a double whammy.
when i was using FP, i started at 1mL/gal and i think my max dose was 2.5mL/gal (i think)
rkymtnman
Well-Known Member
i usually try to use RO water. makes life easier for me. i only use 10 gals a week though.
Yeah I'll try again with my Ppm's insanely low and see how it goes.
I can't use a RO unit as I don't have a tap in my grow room I fill a bath and then pump water to the resevoir. It would take me 24 hours to refill the water in my tank even with the largest unit
Smok3yMcChok3y
Well-Known Member
I dunno I'm at sea level and have very high humidity and warmer temps. I feed at starting at about 750 at flip to 11-1200 full tilt. So maybe that's the correlation. I notice when I run my dehumidifier to 40% rh or so they definitely drink more water.
Edit: not sure of the scale used to calculate ppm as I'm using a 20$ tds stick
Edit: not sure of the scale used to calculate ppm as I'm using a 20$ tds stick
My humidity at the moment is 22% but I'm hoping after I buy an AC unit and switch off my huge exhaust fan and go sealed my humidity will rise and I won't have this problem.
Any humidity that the plants create at the moment is instantly sucked out the exhaust.
Hopefully humidity is the answer and feeding at such a low Ppm will solve the issue
Any humidity that the plants create at the moment is instantly sucked out the exhaust.
Hopefully humidity is the answer and feeding at such a low Ppm will solve the issue
eyderbuddy
Well-Known Member
Read the entire thread and i still can't find an answer to this. I've never heard of a problem like this... Do you use anything else for your reservoir other than what you've mentioned?
Also, just as a recommendation, try to steer away from PPM measurements because of the different in scaling, and try to always use EC, it's just a more reliable way to measure.. And since you've been using the 500PPM = 1 EC scale, then... Maybe? For instance, I've had landrace strains that never liked going over 0.8 EC as they would show similar symptoms with the leaves curling down.
But the yellow on your leaves look like either a deficiency or lockout... Which only serves to confuse me.
Also, just as a recommendation, try to steer away from PPM measurements because of the different in scaling, and try to always use EC, it's just a more reliable way to measure.. And since you've been using the 500PPM = 1 EC scale, then... Maybe? For instance, I've had landrace strains that never liked going over 0.8 EC as they would show similar symptoms with the leaves curling down.
But the yellow on your leaves look like either a deficiency or lockout... Which only serves to confuse me.
Only reason I use ppm is it changes more often. I can see the ppm rise by increments of 10 but it would take a larger drop or rise before I see an EC rise of .1.
I do check my EC regularly aswell I just don't get it.
I have emptied and refilled my res with 1ml/gal foliage pro and 0.5ml a gal protekt today and got 380ppm so will see how it goes hopefully I start seeing the ppm drop as if they are eating.
I don't use anything else at all. Just foliage pro and protekt.
I'm thinking maybe it is my low humidity and maybe sensitive plants time will tell
rkymtnman
Well-Known Member
I know you said it would be hard/impossible, but you need to use RO water. i just read that your starting water is 160ish. that's pretty hard. my well is 0.28ec (140ppm) and i mix it 3 to 1 with RO to get an EC of 0.1ish.
if not RO, you should look into finding GH flora trio that has the hard water version of micro. either that or Ionic hard water formula. if either one is still even available.
if not RO, you should look into finding GH flora trio that has the hard water version of micro. either that or Ionic hard water formula. if either one is still even available.
southernguy99
Well-Known Member
Its not the water or nutes fix your environment your choking your plants out.
drgreentm
Well-Known Member
Dam, how large is your res? I have 150 gallon res in my room and use a stealth 150 and works fine.
Grandpapy
Well-Known Member
It will turn your nutes to a solid and lockout your plants.
You should be adding around 2.5-5ml per gal.
So you reckon it's the humidity that's causing this?
southernguy99
Well-Known Member
with out question your environment is your biggest issue you need to fix first , but you have others as well. get a humidifier and set it to 70%. how many plants you running and what are they in?
JSB99
Well-Known Member
Even though it's a lot of water, I'd do a flush and let them try and recover for a few days. The plants will use their stored energy, and hopefully correct themselves. You might have nute lockout, so fresh water should help. Then, start adding nutes a little at a time, over several days, until you're at your target TDS. See how your plants are doing each day, and stop when your plants are happy, rather than going just off the TDS. Different strains have their own tolerances to nutes.