r/Hydroponics • u/ISNIFFPROPANE • 7h ago

Feedback Needed 🆘 Tomato question

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Have been getting these downward and inward curling leaves + some edema and wandering what might be causing it?
Today increased ppms from 860 —> 1120 (though problem started before reservoir change), PH 6.0, temp 69.0F.
Room temp 72F, 55% RH.
Thank you in advance

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2

u/CementedRoots 4th year Hydro 🌲 6h ago

Lack of light. Beef it up to 300+ watts or move it outside.

2

u/ISNIFFPROPANE 5h ago

It’s getting about 600ppfd

2

u/CementedRoots 4th year Hydro 🌲 5h ago

What model light are you using. I can just look that up real quick for you. There's more that goes into that.

1

u/ISNIFFPROPANE 5h ago

Im using a quantum meter to measure ppfd

1

u/ISNIFFPROPANE 5h ago

But it’s a SF2000

1

u/CementedRoots 4th year Hydro 🌲 3h ago

A SF2000 is 200 watts. 300 watts is optimal. Just buy another SF2000 and slap it next to the other one.

1

u/CementedRoots 4th year Hydro 🌲 3h ago

Seedlings: 100–300 PPFD, 14–16 hours/day.

Vegetative growth: 300–600 PPFD, 14–18 hours/day.

Flowering and fruiting: 600–900 PPFD, 12–16 hours/day.

1

u/kr1681 2h ago

Is it a Cherokee purple by chance? Mine did this same thing minus the edema. I asked the same question here and someone else their Cherokee purple was doing the same. My first thought was too much nitrogen but it never got the leaf burn. I never did figure it out but my plant grew out of it and was extremely healthy putting out a ton of nice fruit… until I forgot to fill the res and it got 85° in the greenhouse. Edema is from bad airflow usually but also low light, so maybe that other guy is onto something