yellowing getting bad

okay I have 2 plants going under a 400 watt hps about 4th week flower. problem is the upper leaves are yellowing out on me starting from leave tips than fades to leaf stock then gets a real faint purple in center of leaf what could it be bottom leaves look a nice green still feeding floranova bloom and molasses

pics not great forgot to shut off the hps pic 4 shows the color difference and I think pic 2 shows a lil purple

really don't wanna lose the girs but cant figure this out don't know what else to try I know its most likely a micro nute prob but what????

You say you're using bloom nutrients - are you using veg/grow nutrients too? As the problem, I believe, is lack of nitrogen - which is found in veg nutes. I grow in soil and use Bio Bizz 'Grow' and 'Bloom' throughout the entire duration of the grow. I used to experience similar issues to you. After I started keeping both nutes going throughout, and added some 'Alg a Mix' (this is a seaweed extract and improves the organics of the soil) - I have found my plants are vivid green and totally healthy.

You also don't mention the ph of the nutrient solution you have been giving them. Anything to far away from 6.5ph and you are likely to experience problems.

But don't panic - they will grow out even if you loose most of the leaves. I had a 'Mad Shack' last grow that had major problems, lost all her leaves at about the same stage as you. I sorted out everything I have mentioned above - and she gained some nice dark green growth at the buds and finished up as the strongest plant. Keep the faith!

i don't think its nitrogen because that would start from the bottom up not the top down bottom leaves are a perfect color and i don't ph my nutes never had to and haven't ran into this problem before

Try posting pics with the HPS turned off. Can't tell anything from these pics

LOL how can ph not be one of the issues here when optimal ph is require to deliver any of the nutrients? Don't ask people questions if you are not open to suggestions.
I used to have similar issues until I got a ph meter and have only ran into one problem since then. You may be having some other issue but you ignoring PH just shows a
real lack of knowledge on how the nutrients are delivered to the plant.

Yah it's nitrogen deficiency. It's normal for your plants leaves to go yellow in flower. To much nitrogen in flower can make your plants take longer to flower.

RCgrowerman said:

LOL how can ph not be one of the issues here when optimal ph is require to deliver any of the nutrients? Don't ask people questions if you are not open to suggestions.
I used to have similar issues until I got a ph meter and have only ran into one problem since then. You may be having some other issue but you ignoring PH just shows a
real lack of knowledge on how the nutrients are delivered to the plant.

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don't listen to this guy i never ph and everything is fine really is no need for a ph meter if growing in soil. soil acts as a buffer and if you added lime kiss ph problems goodbye all together so i think its this guy who dosent know what hes talking about don't post unless you know yourself

and no i don't belive this is a nitrogen def if so you would be seeing yellow at the bottom not just the top so we can rule that out

no doubt about it its a micro nute prob looks kinda like iron

does it look like this if so that's your prob

it looks a lot like this how do i correct it

RCgrowerman said:

LOL how can ph not be one of the issues here when optimal ph is require to deliver any of the nutrients?

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Quite. The guys at BioBizz seem to reckon that you don't need to bother with ph in their soil. I decided I didn't agree, and invested in a ph pen. With that I can make sure my PH is at 6.5 every time. I also started using Alg A Mix so the organics could thrive properly, and all the micro nutrients were available. I always used to get loads of niggly little problems until I started doing this. My current grow is the first from the start with the new changes - and all 5 plants are perfect.

@ OP - Disregard my advise if you want, makes no odds to me - but you will reap rewards if you follow it, I can assure you.

jman23 said:

it looks a lot like this how do i correct it

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Give it some of this at 2/5ml per litre of water!

http://www.greenshorticulture.co.uk/categories/Organics/BioBizz-Nutrients-&-Additives/BioBizz-Alg%2dA%2dMic/

Bigby said:

Give it some of this at 2/5ml per litre of water!

http://www.greenshorticulture.co.uk/categories/Organics/BioBizz-Nutrients-&-Additives/BioBizz-Alg%252dA%252dMic/

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thanks i wasent disregarding your info its just i never have ph probs i do check my ph like 3 times per grow and its always perfect thanks for the help

Iron - Fe is unavailable to plants when the pH of the water or soil is too high. If deficient, lower the pH to about 6.5 (for rockwool, about 5.7), and check that you're not adding too much P, which can lock up Fe. Use iron that's chelated for maximum availability. Read your fertilizer's ingredients - chelated iron might read something like "iron EDTA". To much Fe without adding enough P can cause a P-deficiency.

jman23 said:

thanks i wasent disregarding your info its just i never have ph probs i do check my ph like 3 times per grow and its always perfect thanks for the help

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No probs man (if you were or not)

That Alg a Mix is good stuff though. Can't believe I grew for over 2 years without micro nutrients lol.

i just read a little in a problem section you have the septoms of pottasium levels to low check that out on web and see if that looks like the problem that your plant has

grorite said:

does it look like this if so that's your prob

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This to me looks like light bleaching. Pay no attention to me, but if it looks like this probably nothing to do with N.