Clones not rooting! Is light too stong?

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?

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

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

cloudflyer said:

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

Click to expand...

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

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.

bifter said:

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

Click to expand...

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!

Home_Grown said:

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

Click to expand...

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,

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.

Yo git under a humidity dome?

The first few days till they're rooted~

High humidity and low light~

first of all when cloneing in rockwool you need to prepare it

Step 1 = at your local hydroponic store theres a tray you can get that will hold the cubes place rockwool slab 72 cube tray into this screened tray

Step 2 = fill your bathtub up about 1/4 full or what ever and ph water down to 5.8 to 6.2 place complete tray submerged into tub for like 3 mins

Step 3 = drain tub and lift tray get a 5 empty cups and place them under tray so rockwool will drain leave it like that for 3 hrs or so

Step 4 = set your tray into another solid bottom tray mist dome and place under lights for 24 hrs

now you are ready to take cuttings remember get a toothpick to make a little deeper hole in them cubes when placeing cutting in cubes pinch the rockwool as to close it on top

keep everything steril cut leafs of cuttings in half as there not so top heavy

good luck