Leaves getting yellow stripes

Splinter7

Splinter7

Well-Known Member
pH 5.8. 200 to 300 ppm gh nutes. Meters are calibrated. feed e3d mixing in calmag and Si. Peroxide. PXL_20221119_002944709.jpgPerlite hempy 2 gal. Temp 75ish at day 65ish at night. Rh 45 to 60. 4hrs lights off. 6.5 weeks veg. Output pH in 5.9 to 6. Ppm out is like ppm in.

I have this happening on about half my plants to varying degrees. It gets worse when I turn up the lights. Ppfd at 500 makes them pretty upset do far. Not sure if light related.

Still growth has been good.

Any ideas? Cal deficiency? pH needs to higher for some strains?
 
Splinter7

Splinter7

Well-Known Member
inth3shadowz said:
Get rid of the cal mag and silica...mix GH nutes to 1.1-1.3EC.
Click to expand...

research on other forums suggested running a ph of 6.2 for a couple days. possible calcium lockout due to lower ph. not all plants experience this and i am not have a lot of movement in ph within the reservoir, being stuck at 5.8 apparently isn't that good. i may water tonight with a higher ph and let it feed for day or so. just went into flower too, can't slow it down for just a few flunkies. they look so bad under the light though.
 
I

inth3shadowz

Well-Known Member
Splinter7 said:
research on other forums suggested running a ph of 6.2 for a couple days. possible calcium lockout due to lower ph. not all plants experience this and i am not have a lot of movement in ph within the reservoir, being stuck at 5.8 apparently isn't that good. i may water tonight with a higher ph and let it feed for day or so. just went into flower too, can't slow it down for just a few flunkies. they look so bad under the light though.
Click to expand...
PH for hempies is easy...I literally just use the pH drops and make sure it's light yellow. I stay around 1.2EC from seed and just feed every couple days. I skip the si and cal mag...
 
coreywebster

coreywebster

Well-Known Member
You should be varying that PH slowly.
5.8-6.2.

It wouldn't hurt to up your temps either

be good to see a pic of all the plants in situ too.
 
HitSolution#9

HitSolution#9

Well-Known Member
Splinter7 said:
pH 5.8. 200 to 300 ppm gh nutes. Meters are calibrated. feed e3d mixing in calmag and Si. Peroxide. View attachment 5227957Perlite hempy 2 gal. Temp 75ish at day 65ish at night. Rh 45 to 60. 4hrs lights off. 6.5 weeks veg. Output pH in 5.9 to 6. Ppm out is like ppm in.

I have this happening on about half my plants to varying degrees. It gets worse when I turn up the lights. Ppfd at 500 makes them pretty upset do far. Not sure if light related.

Still growth has been good.

Any ideas? Cal deficiency? pH needs to higher for some strains?
Click to expand...
Splinter7 said:
pH 5.8. 200 to 300 ppm gh nutes. Meters are calibrated. feed e3d mixing in calmag and Si. Peroxide. View attachment 5227957Perlite hempy 2 gal. Temp 75ish at day 65ish at night. Rh 45 to 60. 4hrs lights off. 6.5 weeks veg. Output pH in 5.9 to 6. Ppm out is like ppm in.

I have this happening on about half my plants to varying degrees. It gets worse when I turn up the lights. Ppfd at 500 makes them pretty upset do far. Not sure if light related.

Still growth has been good.

Any ideas? Cal deficiency? pH needs to higher for some strains?
Click to expand...
Light stress would show up at the top first if that were the issue.
 
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