Potential Nitrogen Tox/Overwatering?

ProphetNova

Member
Both of my almost 4 week old plants are curling at their tips. I've attached pics. Anyone have any idea what's up? FF happy frog soil in 5 gal felt pots. No nutes yet. RO water ph'd down to ~6.5. Maybe overwatered it in the past.

They're autoflowers.
 

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I wouldn't worry about that curl now. It's fresh soil. The soil looks pretty dry too. But why are you using RO? And why are you adjusting it? Also what do you plan to use when they need more food?
 
I wouldn't worry about that curl now. It's fresh soil. The soil looks pretty dry too. But why are you using RO? And why are you adjusting it? Also what do you plan to use when they need more food?
I just watered it yesterday lol. It's filtered, my PPM from the tap was like 380 or something. I plan on giving nutes at 5 weeks at half strength. I'm adjusting my ph because it's naturally at like 7.4.
 
I just watered it yesterday lol. It's filtered, my PPM from the tap was like 380 or something. I plan on giving nutes at 5 weeks at half strength. I'm adjusting my ph because it's naturally at like 7.4.
So you have a RO system? 7.4 water going in is fine. I water with 7.8 well water. Using acidic water will breakdown the buffers faster.

I didn't ask when you were gonna feed. I asked what do you plan to use?
 
Sorry, got side tracked by another comment. For my plants that are a week older I already started the FF big trio at half strength.
I was hoping you weren't gonna say that but it's fine. I just see a lot of people have issues with the FF Trio. I'm just doing the organic thing right now. The Big Bloom is organic though. Lots of people have good luck using the FF Trio too, just don't overdo it and it should be all good.
 
Soils too hot. Stunts them badly. You want an EC of roughly 1.2 to start autos in.

Also try using a root stimulator. Can be given from day 1 and really helps establish themselves
 
How do you measure your ph in ro water?
 
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