First Time Growing Problems

[kee362]

Hi all, this is my first time growing and I've been doing studying online for weeks.
My setups are:
-strain: unknown strains from friends from Paraguay
-4*2*5 ft growing tent
-100*3w LED light with red:blue 8:1
distance of the light to the top plant was about 12' yet I moved it up to 23' two days ago
-24hours of light
-RT: 75-80 F (Under AC room all the time)
-RH: 45-55% (Under AC room all the time)
-soil: coco, culture soil, pearl rocks, pH 5.5-6
-water pH 6.3-6.5
-yellow sticky cards for 5 days (have caught few fruit flies and ONE fungus gnat)

The following pictures are my setups:

I watered my plants with pH 6.3-6.5 tap water; three days ago I started giving them N：P：K = 5：2：2 nutrients half-strength. However, the following two plants im doing right now are 16 days old with unknown problems continue going on.
Plant 1:

Plant 2:

And then 7 days ago I germinated another 4 seeds; right now they seems happening a bit leaf edge curling up/twisting as well as my previous two older plants.
7 days old plants:

I've been thought many kind of problems such as light burn(moving light up), nutrient deficiency(adding nutrients), bugs(yellow sticky cards), etc. Unfortunately, everything i've done seemed useless and the problems are getting worse. Please diagnose my problems ill be very appreciated!!

 

[Emilya Green]

You have a collection of some interesting symptoms, and I am not sure that any of them are related to each other. Several of your plants look to be very happy, reaching up, good color.. no problems.

Your oldest plant concerns me. She looks overwatered to me. Are you using the lift method to determine when to water? I also see signs in the older plants of burning that looks like it came from the close proximity LED lights, but now that you have moved the lights out a ways, that appears to have been resolved. I would watch the new growth to see if the color now comes back. If you are unclear as to whether you might be watering too often, please ready my sticky thread, linked below in my signature lines. It is hard to tell yet which problem we are seeing... but now that the lights are fixed, you should know soon.

 

[redmud]

What nutes are you using mine were 7-4-10 for veg and i had them in good soil too so they were already pulling nutes from there. But to be fair i only used them at half strength heres the back of the bottle to compare.

 

[redmud]

Couple more things are letting your water sit overnight or boiling it to get chlorine out. And how are you checking ph

 

[Emilya Green]

Couple more things are letting your water sit overnight or boiling it to get chlorine out. And how are you checking ph

unfortunately, most modern cities got tired of their chlorine evaporating away and they switched to a product called chloramine, and unfortunately for us, it does not evaporate or boil out. My tap water is useless for my organic garden without RO filtering.

 

[redmud]

unfortunately, most modern cities got tired of their chlorine evaporating away and they switched to a product called chloramine, and unfortunately for us, it does not evaporate or boil out. My tap water is useless for my organic garden without RO filtering.

I was getting there but was leading a bit