Hi everyone: could you take the time to help a beginner in hydroponics?

[Rainman2020]

Hi guys and girls. I am in need of help. I have a 4x4 tent with a 8" rhino fan and pro filter. I am using a 6" intake with rhino speed controller. I have 4 seedlings under a 300w c.f.l parabolic shade and they are in a 4 pot 18l. 50l reservoir wilma system with clay medium. I have p.h water to 5.8 and have checked this daily. I water once in the morning. I germinated seeds 31/3. I also have a humidifier in there also. Two seedlings are showing signs of stress. I will include some pictures. I have checked root base and all seems healthy. But leaves are yellowing. I gave them 1/4 recommended general hydroponics nutrient yesterday with calmag. Roots look healthy still any ideas what is going on. ?

 

[Pennywise]

Welcome to 420 Rainman, they look like they’re burning up from too much nutrients. Cut the amount you’re feeding in half for now.

 

[West Hippie]

Welcome Rainman2020 to 420 Magazine

 

[Pbass]

300w c.f.l parabolic shade

Hiya @Rainman2020 that is a beefy light and looks pretty close...possible you are getting light burn?

EDIT: Oop CFL...hows the temp under that?

 

[CO Finest]

I only used cal/mag at that size unless they showed any signs of needing nutes and if so maybe a 1/8 strength at most.

 

[Tomuk17]

Welcome, I would maybe suggest light burn at this point and would move the light up

 

[Bigeef]

Hi guys. Setting up a 16 plant hydro setup as we speak. Thinking of doing a grow journal. Anyway newbie here just saying hello

 

[Pbass]

Hiya @Bigeef I saw your plan in the other thread...you're not really think of putting 16 plants and 4 cmh's in a 3x3 are you?

 

[Bigeef]

4 hps. And yes I am. What's the problem with that. Theres plenty of room in a 3x3x2

 

[Rainman2020]

Hi guys just to update. I hadn't given any nutrients until after posting. Since I have given calmag and seen new growth. I think my problem had been taking them out of propagator to early without a sufficient root base and my tent was not humid enough. Thanks for all the replies

 

[Pennywise]

That will do it.