DWC - late flowering overnight water down ppm up

T

TtKk

New Member
Hi Guys,

I've got a question about my DWC.

My girl is in late stages of floweing drinking water and nutrients really well during the day.

Recently from time to time when I check ppm levels after night they shoot around 500ppm up and she drunk a lot of water.

Is that normall that she drinks just a water at night? Should i top her up with water to level the ppm?

Cheers,
 
myke

myke

Well-Known Member
Lower EC at week 6 then a little more 7 8 9.I end up week 10 at .4-.5 EC

EDIT, I cant say ive ever had ec rise like that because of dark period.Is water evaporating that much?
 
S

Splash Gordon

Active Member
TtKk said:
I've added strong dehumidifier in my small grow tent maybe it is causing it.
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Lol I’d guess the dehumidifier is the culprit. If you can put the dehumidifier outside of the grow space near the intake fan so less humid air is being drawn in.

Just keep testing different methods until you find the one that works best. I’ve found that ec/ph/h20 levels are an ever evolving game. As temps and humidity fluctuate/ plants response and levels within your res will do the same.

I’ve recently been experiencing dropping ph, rising ec, and dropping water levels. On a random day I put her in direct sun instead of under grow light and ec dropped by 400 ppm, water dropped by 1/2 gallon, and ph shot up. Normally I’m fighting dropping water and ph while nuts stay the same.
 
Pacoson71

Pacoson71

Well-Known Member
I also do this in DWC and the next day the EC is up!
Like the girl is spitting back nutes.
I'm in week 6 of flower and this is the second time this has occurred.
As long as they look health I'm good ..........I guess.
 
myke

myke

Well-Known Member
Not uncommon for plants to slow down eating at week 6,especially if youve been feeding high.
 
M

Meast21

Well-Known Member
myke said:
Lower EC at week 6 then a little more 7 8 9.I end up week 10 at .4-.5 EC

EDIT, I cant say ive ever had ec rise like that because of dark period.Is water evaporating that much?
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So on week 6 go from maybe 950 ppm to like 800ppm or so??
 
myke

myke

Well-Known Member
Meast21 said:
Yeah I've noticed if you don't drop the ppm's from say 950 to say 650-800 the ph will crash. Right?
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I guess it depends on how much water there is,I typically dont go over 1EC the whole grow.I dont have to change water out as much either.
 
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