Not too sure what's happening with these plants ? :s

Hi, not got a lot/any experience and looking to give it a good go. I have few questions these plants have been veged for 5 weeks and I'm noticing a few this wrong. Mostly on the leaves. It's under a 400w hips light there is an inline fan with filter when the lamp is on the humidity drops to around 20% is the yellow/ whitening of the top leaves due to burning from the lamp. I am using a light soil watering every 2/ days using canna terra nuts very 3 days as directed. Any help at all would be appreciated. Thanks in advance !

Are the temps fluctuating? Can you check ppm's?

That could either be nute burn or bulb burn. Either way it's not too bad but you need to figure out what's going on.

Thanks lads, well the temp gets to around 30 with light on with20% rh and 20 with up to 65.70% rh. How would I borrow down the diagnosis ?

How close are your lights? I'm wondering if it could be light bleaching? I'm not sure though. Maybe someone else can shed light on the option...

longarms90 said:

How close are your lights? I'm wondering if it could be light bleaching? I'm not sure though. Maybe someone else can shed light on the option...

Click to expand...

Lol no pun intended.
The light was about a ft away but now I'm moved it too about 2ft away. I read that it had to be closer but any advice would be great !

With that light you can go down to like a foot and up to 4 to 5 feet its all up to you.

ya i guess a foot away isnt too bad. so thats probably not your problem then

They have went too a 12 12 cycle and I checked just before the lights came back on the the whiteness seemed to be fading greatly it have them a good watering so I'm hoping the problem was light bleaching. I'm going to keep the light further away and see how I get on

Damn autocorrect makes me sound like a retard sometimes :/ but hopefully u get the just of what I'm saying.

Its probably the humidity ,Your plants will like a humidity level around 50% with lights on. Ph should be checked and controlled.What are you growing with?What kind of water.What kind of growing media, Fresh air change overs.Your humidity is WAY to low though.The plants leaves with transpire and give its moisture up to a low humidity enviro. Bud development will suffer also.
You must get temp, humidity under control.