Need help my plant has problem

[paliakos]

Hello,
This is my first grow and i already have dealed with some problems but this is a new and can't really figure out why it's happening.
Plant is at flowering day 16
Some info for grow
Strain: RQS Blue Mystic
Lights: 120 w real draw led panel distance from canopy 40 cm
Growing medium: biobizz light mix,perlite,coco fiber(70%-15%-15%)
Temp day :24-27, RH day: 40-55
Temp night :19-22 RH night:50-60
Nutrients:biobizz (grow, bloom, top max), Advanced Nutrients Bug Bud
feeding every watering at dosages as suggested by companies.
Ph of solution: 6.4-6.7
Ph of runoff: 5.8-6.1.


So yesterday i noticed some dark purple-black color on the edge of a fan leaf and as u can see same leaf has also became more yellow than the rest of them

and to a bud leaf also

I have to mention here that 2 days ago i noticed that stems of top leaves has started to turn purple
Flowering day 14

A guy then suggested that is a magnesium defeciency and told me to add some epsom salts.Now it looks to me more like a nutrient burn but again i am not sure cause this is first time trying to grow something and since it's only 1 plant i dont want to mess up.
Any advice is welcomed

 

[dabking]

You need to flush. You are locking out. You can't follow manufacturers recommendation. You need to feed according to size and what they ask for. Definitely burning. Flush really well and then water with half strength of what you are using and watch them before increasing feed.

 

[BlazinAzn]

You need to flush. You are locking out. You can't follow manufacturers recommendation. You need to feed according to size and what they ask for. Definitely burning. Flush really well and then water with half strength of what you are using and watch them before increasing feed.

I agree. After the flush period you should cut off the damaged leaves and look for improvement in the new growth.

 

[paliakos]

thx guys i am gonna flush now

 

[fonzee]

I would put a 1 cm layer of earthworm castings on top of the existing substrate and use at this stage 1 ml/L of BioBloom only.
I don't think the BioBizz line is good enough to nurture a plant without some additions from compost / EWC etc.

I would also like to add that BioBloom never gave me properly sized results and that TopMax is just molasses with water in terms of what it does.

 

[Granger2]

I would put a 1 cm layer of earthworm castings on top of the existing substrate and use at this stage 1 ml/L of BioBloom only.
I don't think the BioBizz line is good enough to nurture a plant without some additions from compost / EWC etc.

I would also like to add that BioBloom never gave me properly sized results and that TopMax is just molasses with water in terms of what it does.

How do you know that about TopMax? Did you use the whole BB line or just base nutes? At 1 ml you won't get good results. Way under feeding. -granger

 

[fonzee]

Been using them for a couple of years. Base, additives, together and alone.
I've been doing side by sides with the TopMax vs. molasses and molasses did just the same trick, just cheaper and more concentrated.

At this stage the EWC addition should supply sufficient feeding.


Today the only BioBizz product I'm using is Alg-A-Mic and I'm looking to cut it out as well as it tends to go bad too quickly in my opinion.

 

[paliakos]

i am using big bud with biobizz and i will add overdrive also to get bigger yield cause i feel biobizz are bad at flowering additives. Bio grow is pretty good in my opinion next grow i am going with AN full series cause i feel they are way better

 

[710Chef]

Good luck with the flush and new growth hope she gets better