Curious if this looks like a nitrogen def.

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Electrolights

Electrolights

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So this is my first grow in about 10 years and first hydroponic grow. These things were slow at the start (pretty sure I burnt them as seedlings or at least one of them) and I’ve been able to get them to start looking way more healthy my only concern is the color was hoping someone with more experience would be able to tell me if this is a nitrogen deficiency or phosphorus with how light the leaves are.
Water PPM 500 air co2 1000-15000
LED light giving 500-700 PPFD
Water temp is 72
Temp is 80 light intensity at 75%
20/4 Light schedule
White Widow Autos
PH 5.5
RH 55-60%
 
A50FFA11 B414 4447 AAC3 6E97ACD52A89
56EF421F C558 44F5 8D03 EC93404B8798
78680643 BB52 488D A9F3 7E77EC17B64C
1EB262BE 28B0 4632 A5BC D2330E9C17D2
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mysticepipedon

mysticepipedon

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It doesn't look like an N deficiency. Whatever caused that lower leaf to have a yellowing tip may no longer be in play, since it does not seem to be spreading to newer leaves.

I can't tell if leaves aren't expanding fully or if there is interveinal chlorosis, from these pics. Maybe someone with experience with hydro will drop in.
 
Electrolights

Electrolights

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Yeah I noticed the darker veins or start of a darker tint I was wondering. Possibly need phosphorus? The plants have been this light green since growth started now just noticed the darkening in some spots thinking the leaves should be that dark color and are trying to recover from lack there of something. Could just be paranoid, just looking for a better educated opinion then my own, appreciate the response
 
Aqua Man

Aqua Man

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To much light… way to much for a plant that size. Should be around 100-300 ppfd about now and id start at the low end because they are already stressed then see how they look in a few days.

Understand that damaged leaves will get worse not better
 
Electrolights

Electrolights

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Alright thank you
To much light… way to much for a plant that size. Should be around 100-300 ppfd about now and id start at the low end because they are already stressed then see how they look in a few days.

Understand that damaged leaves will get worse not better
okay thank you I have a ppfd reader so I’ll go to like 150
 
Electrolights

Electrolights

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So first photo is the one I was having issues with. Now the tips are clawing down, both in the same reservoir so I’m not sure anything I’ve read about downward claws is a toxicity?
 
Image
Image
Electrolights

Electrolights

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It’s currently at 450ppm I’m changing the res out now though with to water light PPFD is 200 gonna do calmag and follow a trio chart
 
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Electrolights

Electrolights

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43
Put recommended cal mag in Per the bottle tsp per gallon brought ppm to 300 added 1/4 tsp of base floratrio nutes per gallon , at 350ppm waiting for water temp to get up before putting them back in, they’re still in previous container, they’re currently in a 55 gallon container which is way to big to keep up with nutrients so sized down to 30gallon both plants are opening up their first 7 finger leaves
 
Aqua Man

Aqua Man

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Supporter
24,231
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Put recommended cal mag in Per the bottle tsp per gallon brought ppm to 300 added 1/4 tsp of base floratrio nutes per gallon , at 350ppm waiting for water temp to get up before putting them back in, they’re still in previous container, they’re currently in a 55 gallon container which is way to big to keep up with nutrients so sized down to 30gallon both plants are opening up their first 7 finger leaves
Whats your source water? Its likely the high dose of cal mag thats giving N tox. Check your cal mag and i bet you see the sources as calcium nitrate and magnesium nitrate
 
Electrolights

Electrolights

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43
@Aqua Man Yes it does say that… live and learn I guess. Redoing res. Going to put in 1/4 of what I did 1tspn per gallon I thought
 
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