New Grower Are light coloured tips always over feeding? Could it be under?

[Greengrower]

Hi guys!
I have 4 girls all 5 weeks old.
As you can see, the tips are turning a lighter colour.
I'm feeding biobizz grow and bloom.
500ml of water every 48 hours.
In that 500ml I add 0.25ml of grow and roughly 0.5-0.75ml of bloom.
I'm in biobizz light mix.
From what I understand it's hard to burn plants with biobizz because it's organic or something?
Any help would be appreciated!
Thanks!

 

[GorillaGlue15]

Tips can burn from lumen shock. This is a hidden tragedy that often goes untracked

 

[Greengrower]

Tips can burn from lumen shock. This is a hidden tragedy that often goes untracked

I shall look into it! Thanks

 

[Waira]

:smoking:Got the PM mate,... this isn't a light thing at all, that doesn't affect just the tips like that,... feeds seem OK, not heavy,... several things can cause the tips to yellow, usually something nutritional/pH related.... Get me more pics, whole plant in normal light.... It could be that cumulatively, you are over feeding a bit.. There's a good thread on BioBizz nutes here,....

 

[Greengrower]

Hi Waira
Thanks for taking a look, here are the pics!
First we have a critical 2.0 auto

 

[Greengrower]

Next we have a dark devil auto.
She's already showing her colours and I think she's going to look gorgeous.

 

[Greengrower]

And lastly we have another critical 2.0 auto (I had no idea about that lower leaf btw) could that be where I've spilt water/feed on it or is this a bigger issue?
As always thank you for your help, I really appreciate it!

 

[Waira]

Are you following what their feed chart says, more or less? And this is being feed every time, no water only days? None of the other components to their system? If not, I wonder if you're getting short on micronutes maybe,.. plenty of N going in, P seems OK....
Those lower leaves are normal fade, no worries there,...
Cut out the Grow part, stay on Bloom; on the worse two plants, skip feeding every time, water only and see if the symptoms halt,... gonna be a few-several days...

 

[Robg1808]

Congrats on those beauties! youve got some nice looking plants there. To me i would just back off on the nutes a bit (especially the grow) it seems like they are a bit overfed. The flower also has some N in it as i remember correctly and these ladies look like they are estabished in the flowering stage. I would say stick with the flower on its own. Less really is more and In my experience you can actually produce dramitically lower yields from over fert just as you can from under. Its about finding that sweet spot for each individual strain. Do you use molasses when watering? could add some of that into the mix

 

[Greengrower]

Congrats on those beauties! youve got some nice looking plants there. To me i would just back off on the nutes a bit (especially the grow) it seems like they are a bit overfed. The flower also has some N in it as i remember correctly and these ladies look like they are estabished in the flowering stage. I would say stick with the flower on its own. Less really is more and In my experience you can actually produce dramitically lower yields from over fert just as you can from under. Its about finding that sweet spot for each individual strain. Do you use molasses when watering? could add some of that into the mix

Thanks for the input!
Only reason I carried on with the grow is because I've been told that with biobizz it should be used the whole way through the grow.