First grow. Need some help/advice

Hey all this is our first grow need some help diagnosing the first issue thats popped up so far(pics below).

Grow info
First 8 days were under cheap 2x t5 non h0 30w each

5 days under t5 h0 6x39w (which is what the are currently under)

soil at the moment = peatmoss/potting mix,The soil is very aerated lots of oxygen

Temps are always around 24-27 degrees and it goes upto 30 sometimes for an hour or so when the lights are on/doors are closed, Temps sit around 19-20degrees in the 6 hours that the lights are off.

Problems = The ends of the leaves are yellowish, Also the the power africa's stem is red.





Power africa/skunk 11/power africas red stem






Quick questions
How far would the t5 h0 6x39w get the plants? Will more lighting be required until its time to start flowering?

What colour spectrum should we be using during veg?

Are the leafs burned from heat/being to close to the lighting or may it just be a nutrient deficiency? Suspect that it may need nutrients but we are hesitant to add anything at this age.



any info/tips would be much appreciated

I had the same problem. I read somewhere that it might be chlorinated water that burns and yellows the ends of the leaves, also causing them to curl and turn a brownish yellow color. I heard it also might be heat stress. I read the red stem is plant stress. Lower the light if you think its stretching. Keep it below 85 degrees. If you have an oscilating fan, maybe pull it back so it doesn't blow so heavy on the leaves. These are all things I am trying, seeing what works. Can you post pictures?

oh yeah and if you are too broke for bottled distilled, purified water enriched with minerals for your plants and have to use tap water like me, then let it sit for 24 hours, its suppose to de-chlorinate it.

u should be able to put a t5 a inch way
i think u got another issue
do u let water sit out like other poster suggested
if u are not giving them nutes give them a weak dose and if u are already giving nutes stop
hard to say looks like nute burn what soil u using may be hot in npk

Clamil said:

I had the same problem. I read somewhere that it might be chlorinated water that burns and yellows the ends of the leaves, also causing them to curl and turn a brownish yellow color. I heard it also might be heat stress. I read the red stem is plant stress. Lower the light if you think its stretching. Keep it below 85 degrees. If you have an oscilating fan, maybe pull it back so it doesn't blow so heavy on the leaves. These are all things I am trying, seeing what works. Can you post pictures?

Click to expand...

Links to pics are in the post, My first thought was its heat because i had to have the cupboard closed for close to 2 hours on two occasions where the temps got upto 30 degree's celcius in there, Didnt think that the fan being too close would really effect it but i might also look into that

Clamil said:

oh yeah and if you are too broke for bottled distilled, purified water enriched with minerals for your plants and have to use tap water like me, then let it sit for 24 hours, its suppose to de-chlorinate it.

Click to expand...

Been using filterd tap water usually room temp thats been sitting their for at least afew hours, Might have used it straight from the filter mabe once, Will start making sure its been out sitting for 24 hours from now on

makes it easier if u post pics here and some are afraid to click links might be bad link
just saying

fabfun said:

u should be able to put a t5 a inch way
i think u got another issue
do u let water sit out like other poster suggested
if u are not giving them nutes give them a weak dose and if u are already giving nutes stop
hard to say looks like nute burn what soil u using may be hot in npk

Click to expand...

Not giving them any nutes at the moment, Only using water thats sat there for at least afew hours, Pics have been uploading for a while very slow lol.

Using killarney peatmoss + scotts osmocote potting mix

what is npk i searched and couldnt find it
i think soil is the problem and looked dry as hell lol

it said it feeds for 6 months most say 3 i think u got some hot soil and got nute burn

First post has been updated.

I have an identical problem.

If it's the soil what should be done?
I use filtered water usually and I let it sit there for 24 hours whenever I can but sometimes I water them directly from the filter too.
Any useful tips?

mcsmokes said:

I have an identical problem.

If it's the soil what should be done?
I use filtered water usually and I let it sit there for 24 hours whenever I can but sometimes I water them directly from the filter too.
Any useful tips?

Click to expand...

make your own organic soil i can help u do it

that time released shit u dont know how much or when it will release it

IMO your soil is too high in N and either doesn't have enough P or K, or your PH is not ideal. I think the red stems and burnt leaf tips are indicative of this. If I were you I would change the soil or even try to cut it down some with perlite. I would also check the ph of your runoff and make sure your in the green zone.
Good luck and happy growing.
KnB