Clones not rooting! Is light too stong?

**NuggLover** · 09-02-2007, 01:29 AM

Whats up everyone, I took about 4 cuttings about 2 weeks ago and Im now sure they are Gonners!!!!
I had them under an eight lighted T5 with all the Lights running. All lights are running cause I am currently Vegging a Few other Plants that are pretty Mature. I had a buddy suggest that it possibly could be the T5 giving he just had an 8/8 success for his cuttings last Month only using a tiny Flourescent Light.

Has anyone had any experience with Lighting being too strong for the clones or if anyone could help????
....would be very apreciated,
Thank You
pEaCe

**cloudflyer** · 09-02-2007, 01:31 AM

I'm going to take a stab and say you are using rockwool cubes. They have to be PH balanced before use. Did you use rooting gel?

**NuggLover** · 09-02-2007, 01:46 AM

Rockwool, Yes.
Rooting Gel, Yes.
Ph, Negative
I know the water here is not over 7. though. Should it be Lower?
Ever heard any specifics on Lighting?
Thanx

**cloudflyer** · 09-02-2007, 01:48 AM

Yes
When you first buy rockwool cubes the are up at 9. You have to balance them. Your PH should be between 5.5 and 6.5.
What do you want to know about lighting? There is no such thing as to much light, just to much heat. But in that stage they only need 250-2500 lum

**bifter** · 09-02-2007, 02:15 AM

Easiest way i have found is to use a heated propogator ,put it in a window sill and away you go,gives just the right heat and humidity which is what clones need to root more than light

hope this helps Bifter

**Home_Grown** · 09-02-2007, 02:25 AM

Originally Posted by cloudflyer

Yes
When you first buy rockwool cubes the are up at 9. You have to balance them. Your PH should be between 5.5 and 6.5.
What do you want to know about lighting? There is not such thing as to much light, just to much heat. But in that stage they only need 250-2500 lum

Too strong of a light early on in the clones young days can be harmful.

**wutter** · 09-02-2007, 05:29 PM

I'm just a newb at this but did you clip them properly? and put the little ridges on the side? just some stuff i read a while back.

**NuggLover** · 09-03-2007, 05:11 PM

Originally Posted by bifter

Easiest way i have found is to use a heated propogator ,put it in a window sill and away you go,gives just the right heat and humidity which is what clones need to root more than light

hope this helps Bifter

yea, Ive heard of using some sort of heating pad.....thinkin about it....I do live over here in So.Cal...PalmSprings Area, I really think leaving them on a 100+ degree window sill might not be such a great Idea at the Moment

Thanx!

**NuggLover** · 09-03-2007, 05:16 PM

Originally Posted by Home_Grown

Too strong of a light early on in the clones young days can be harmful.

yea Im starting to think this might be the case.
Had a Buddy who had some Trial n Error with using the T5 compared to a small Flourescent mounted to those 7in. Green house Domes.
I just had a go again with about 20 more cuttings......Ill try lower lighting.

Anyone out there know the Exact Temp. for cuttings to thrive?
Thank you,

**tokingtiger** · 10-25-2011, 03:26 PM

I just bought a new thermostat from my local HydroFarm store and my clones are 75 now all night long. In summer i was hitting 90% success but a couple cold nites and i started loosing 100%. I also had a defective PH tester, i now use the 3-4 drops and little vile. They have not rooted yet but are looking much stronger. I read in a few places you dont really want high light either, You want the plant forming roots more than spending energy in the leafs. I actually took the light off the top, it was only 50watts of 5k cfl but i think i get enough light from the veging plants right next to them.