help please: Seedlings under a T5

Tym

Tym

Well-Known Member
Hey guys, I'm starting 5 seedlings under a T5 FL in a heated seedling flat. They are growing quite tall in just 5 days, is this normal? The light is about 2" off the top of the dome. should it be closer? Or should I turn on the HPS? If so how close?


photo(3).jpg

Thanks guys..
 
get the dome off and a small fan blowing on those things to toughen up the stems. I doubt you have the right spectrum of bulb there (6500 K) and enough tubes. You better get the HPS on them as close as you can without overheating them about 12-14 inches away.
 
I think it is time to take that dome off, and just spray the plants threw out the day. And lower the lights some, And all should be GREAT, Set up looks nice
 
Thanks Guys, I guess I should get them in to the bigger rockwool too?
I've got the light on 24hrs right now, should I switch it to 18/6 now too?

Thanks for the help guys!
 
I would change light to 18/6 and transplant them into what ever size pot u want. and then water them a bit and HAPPY GROWING MAN
 
that same thing happened to me when i first started with seeds i would transplant put lights closer with a fan on a low low setting and steak them with a toothpick and twist tie for a while when mine looked like this i went to move them and a couple fell over and broke lol hope this helps
 
Lol, I've pulled them out. Put them in large rockwool cubes, watered them and put the 400w on them.. 14" was way to close temp was at 90F+!!, they were starting to droop. So I raised the light to about 3ft. Temp is holding at 83f now. They straightened up quick and are doing fine now.. I just hope it doesn't get to cold for them at night.. I will most likely leave them on a 24 hr schedule at least one more day, just to let them get a bit bigger before they spend the night cold..
 
Tym said:
Lol, I've pulled them out. Put them in large rockwool cubes, watered them and put the 400w on them.. 14" was way to close temp was at 90F+!!, they were starting to droop. So I raised the light to about 3ft. Temp is holding at 83f now. They straightened up quick and are doing fine now.. I just hope it doesn't get to cold for them at night.. I will most likely leave them on a 24 hr schedule at least one more day, just to let them get a bit bigger before they spend the night cold..
Click to expand...

What kind of night time temps are you talking about?
 
have you taking the seed bracts off? sometimes they need assistance with that. they need help when the look like this...

DSC00767.JPGDSC00768.JPG
 
Yup, they are all free now.. LIghts just went out. they will come back on in the morning. They have been taken out of the seedling flat, placed in to large rockwoll cubes and put under the HPS.. Hope they will be alright.. They look kinda young to me to be under the HPS..
 
Tym said:
Do you think they are ready for the HPS? I've got the HPS over them (at 24") and a fan gently on them..
Click to expand...

Just keep the lamp as far away as you can at this stage. I myself don't use large lamps until they are a few weeks old. I use a shop light with 2 40 watt cool white on seedlings, I put it right down on them. I have never used a t5, does that get hot? If not you can put that right on top of them too.
 
Purplekrunchie said:
Just keep the lamp as far away as you can at this stage. I myself don't use large lamps until they are a few weeks old. I use a shop light with 2 40 watt cool white on seedlings, I put it right down on them. I have never used a t5, does that get hot? If not you can put that right on top of them too.
Click to expand...

No it doesn't get hot, but it's just 1 23w CW.. It's what made them stretch out to begin with.
 
You must log in or register to reply here.

Similar threads

M
Light stress and LED dimmable lights?
Replies
3
Views
332
Jimski
Jimski
Fish scale
seedling stunted growth
2
Replies
36
Views
1K
russ0r
russ0r
D
Humidity dome seedlings
Replies
5
Views
450
ALPHA.GanjaGuy
A
G
Need help on some seedling please :) Barneys blue cheese and tangerine dream - Outdoor grow in the Algarve Portugal
2
Replies
27
Views
2K
gremmy2shoes
G
S
Help with lights and nutes and my beginner questions please?
2
Replies
22
Views
1K
MissinThe90’sStrains
MissinThe90’sStrains
Back
Top