Can anyone help with what is causing this to happen?

[Jebidiah]

I had similar issues with a new 400w hid fixture and bulb…the heat and light stress had me checking everything thinking it was nutrient related because the light was already 18” up then I backed the light way off for a day and they perked back up temps at the tops were in the 80’s.

[Joshp]

The pot is just the seedling pot it's at a litre maybe litre and half the plant will be going into its on 25 litre fabric pot soon which I will add perlite too and I also use eco thrive neutralise for the chlorinated water one drop to every litre so shouldn't be getting chlorinated water but I will definitely add perlite to the mix.

[PLreef]

Agree with the statements above from Capt and Rwise. Living Soil is great till it gets messed up. Either from using chlorinated tap water or depleting the dry amendments and not replacing them soon enough or using chemical ph buffers and so on.
As for the soil it looks like it suffocating the plant. In my opinion you need perlite mixed in. The roots need air to breath.

[Rwise]

Are you using tap water? if so what do you do to kill the chlorine/chloramine? These chems will kill the living soil, and then that PH buffer doesn't work.

[CaptainWiese91]

Well it clearly doesn’t like the soil.
I want to say you have root problems - because of the symptoms on the leaves to be honest.
But I have never grown in a living soil - But I think you need some perlite in that soil mix. The roots needs oxygen, even in a living soil.

how big is that pot ? You need to get it in a bigger pot.

[Joshp]

Hi so I'm 70x70x160 marshydro grow tent with a 1000 marshydro light it pulls 150 watt from the wall I have it at 20 inches above the canopy on about 40% so the soil is a living one from eco-thrive so I am not giving it no feed as this soil is nutrient rich If I'm honest I haven't been maintaining a pH because its a living soil the shop I got it from said the microbes will buff the pH of the water naturally I'm there is no perlite in the soil what so ever as the company states they use a different method in there soil also humidity I running on the low end at about 45% not quite sure what too do to help the plant as it doesn't look like it's bouncing back at all. Thanks in advance.

[PLreef]

If I had to guess I'd say your having root issues and or in combination with ph issues. Give us some information on her. What are you feeding, what's the ph of that water, have you check ph in the root zone and so on. The more info you give the better.

[Korn]

Good questions

[Korn]

I agree.

[TOKABIGONE]

Hey Joshp without any grow info in your post I will guess the issue is your medium has poor drainage and the roots are having issues with lack of oxygen due to being too compacted. Transplant into a better soil with some perlite would help or just ride it out but your yield may not be great. It's drowning.

[CaptainWiese91]

What is the humidity?
what type of soil is that ? Do you have good drainage in the pot? So the roots gets enough oxygen. ?
Do you have perlite mixed in the soil?

[Joshp]

Hi im a new grower and my had some advice the other day that I may have over watered so have been allowing it to dry out but it continues too get worse just looking for any advice on what could be the cause and how too fix if possible.