Nutrient lockout?

I am in week 4 of flowering I have "early vixen" by crop king seeds on the go, everything has been going good up until recently. I'm growing in a hydroponic set-up and the water wasn't changed out on time. Ph was through the roof for a few days, mid 7 anyway. All the water was changed 4 days ago and ph has been sitting around 5.7 - 6 I lower it if it gets to 6 or above. Every 2 days I adjust. The leaves have been turning yellow around the edges. I'm thinking potassium deficiency but I am new, this is my first grow and any help would be appreciated. you can see it starting in the first picture, and 2nd picture is where its at now. Any help on correcting it in a hydroponic grow would be appreciated. Thanks guys

3 things i see.
1) back off on the nutes a little
2) move the lights up another 6-12 inches
3) check your temps and humidity
looks like you are cooking the plants. do you have a fan blowing across the top of your canopy? if not get one. get your lights higher or you will cook your trics and make your smoke weaker.

Gotcha, thanks for your input, There is a couple fans going but its all contained, definitely running a bit high temperature now that you mention it. I'm 9000 miles away from my girls right now and the person taking care of them is more new to this than me so hopefully we can sort it out. They said the temp was 73 and lights were off so obviously too hot when lights are on. Good call, I think and thank you for your expertise good sir

Any other thoughts or add-ons always appreciated.

if it gets to hot in the cabinet you can place a frozen water bottle in there so the air will cool down. dont let the temps go over 80F for very long.

Nute burn.
Reduce nutrition by at least 25%. Wait, answer these questions first!!!
Do you dump and refill with fresh?
How often?
How do you "top off" your res? Do you just add fresh 100% nutes?

The tub is drained completely and filled once per week with fresh everything.

WeedMiller said:

The tub is drained completely and filled once per week with fresh everything.

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Hmm, so no "topping off"?

Ok, simply lower your nutrient ratio by 33%. (1/3)
That should put it just about perfect. Watch the new growth for the indication that it has.....Still getting some? reduce to 50% of the original amount used. Not enough nutrient and begining to see a def.? Go up to 75%.

first what are you using? you must use grow 40% bloom 40% cal/mag 20% the whole flower. if you keep them green you win.

definitely nute burn looks like it might be locking out nutrients looks like early potassium and zinc I believe, flush for an hour to let the water dissolve any salt buildup in the the root wad then start introducing nutrients lightly.

Last Image lower leaf

DCobeen said:

first what are you using? you must use grow 40% bloom 40% cal/mag 20% the whole flower. if you keep them green you win.

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I've never heard of using 40% 'grow' and 20% calmag throughout a flower. 'Grow' is very high in (N)itrogen which isn't really needed for bloom, and calmag is typically a one-off if you notice Mag or Cal issues.

-spek

the plants will use what they want. molasses is cal/mag plus. i use it the whole grow. plants need N in flower mode also. well bro i wish i could share pics of foliage pro running the whole grow no bloom at all. I know this isnt norm but i add bloom and mollasses as my cal mag. it works. i can only say i so far i have a 8 oz per plant average, we shall see after this run of 40 plants. if i get 6 oz per plant i will be happy. i do veg 2-3 months though. i am not one who grows small plants. i like them big and bushy. I will just have to show you in my 2nd round. i wont argue or debate. i will just do it or die trying.

DCobeen said:

the plants will use what they want. molasses is cal/mag plus. i use it the whole grow. plants need N in flower mode also. well bro i wish i could share pics of foliage pro running the whole grow no bloom at all. I know this isnt norm but i add bloom and mollasses as my cal mag. it works. i can only say i so far i have a 8 oz per plant average, we shall see after this run of 40 plants. if i get 6 oz per plant i will be happy. i do veg 2-3 months though. i am not one who grows small plants. i like them big and bushy. I will just have to show you in my 2nd round. i wont argue or debate. i will just do it or die trying.

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your right D, many people have this random inclination that they can just drop off the N and use the little amount reserved in the plant combined with the small amount in they're bloom ratio. And they wonder why week 4 flower they're plants are off balance and yellowing unhealthy leaves. Plants in flower will have yellowing leaves but it isn't as intense as alot of the images I view. Give them adequate N through out they're life not all strains yellow off. I have grown a few strains that stay nice and green to harvest.

youngbuzz101 said:

your right D, many people have this random inclination that they can just drop off the N and use the little amount reserved in the plant combined with the small amount in they're bloom ratio. And they wonder why week 4 flower they're plants are off balance and yellowing unhealthy leaves. Plants in flower will have yellowing leaves but it isn't as intense as alot of the images I view. Give them adequate N through out they're life not all strains yellow off. I have grown a few strains that stay nice and green to harvest.

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yes. thank you. you dont need the full N. that is why i mix 1/2 grow with 1/2 bloom but i feed every water. you have to learn PPM. Start slow and slowly up it till you hit between 650-1100 depending on strain. 650 is for soil and 1100 is for AIS. yes its a big diff. also i add 1 tsp to 1 tablespoon molasses every time. This is a learning process so have fun. dont experiement on all but pick 1 plant and try something diff. labvel it good and record what you do when you do it. who knows you could find the 1 thing that makes them blow up. I enjoy my indoor garden and will help anyone who asks or i see needs it. have fun all this is not a job but a way of life.

I must say thank you again for all the responses. I'm trying to learn everything I can off you guys but you are light years ahead it seems. As for my week 4 feeding it went as follows, this is all stuff from future harvest development if you are familiar, Again I'm a newbie and have no idea what each of these are really doing when it comes down to it. Planticillin looks like molasses to me, I even commented on it when I opened the bottle for the first time. This is also per 19 liters of R/O water, 4 liters of tap ppm on tap water was low cant remember exactly 100ppm maybe at most ph 7 for tap but mixed in with R/O it starts at 5.7 and I correct every 2 days to 5.7.

23 litres total for water combined with-
Common - 115 ml
2. Flower - 115 ml
3. Super B+ - 46 ml
4. Carboblast - 46 ml
5. Planticillin 5.8 ml
6. Ton of bud - Add 46 ml
7. Bud boom plus - 46 ml
8. Royal Gold - 46 ml

Week 5 I went with 80% of the feeding schedule after and monitoring them closely for anymore nutrient burn, they seemed to be happier after they got cooled down as well, thanks dc for pointing that out, week 5 changed to this

1. Common - 110 ml
2. Flower - 74 ml
3. Super B+ - 37 ml
4. Carboblast - 37 ml
5. Planticillin - 4.7 ml
6. Ton of bud - 37 ml
7. Bud boom plus - 37 ml
8. Royal Gold - 37 ml

Can anyone help with my newest problem? Ive got a few leaves like this now, I'm on week #5 with 80% nutrients as shown above

WeedMiller said:

Can anyone help with my newest problem? Ive got a few leaves like this now, I'm on week #5 with 80% nutrients as shown above

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Okay it looks like lock out is starting. salt buildup is my guess. the outer edge looks like nute burn and its eating the inner part which to me means a mild flush. I would add 3 drops of reg dish soap to 1 gal of water and flush it a bit. the soap will help allow the soil to hold moisture better and will not hurt your plant/s. nutrients leave allot of salts behind. i bottom feed now and every 10-14 days i water from the top for a mild flush. I do add 3 drops of dishsoap when i do this.

waht is the N level of you nutes? they need N the whole time also. That could cause this issue also.

DCobeen said:

Okay it looks like lock out is starting. salt buildup is my guess. the outer edge looks like nute burn and its eating the inner part which to me means a mild flush. I would add 3 drops of reg dish soap to 1 gal of water and flush it a bit. the soap will help allow the soil to hold moisture better and will not hurt your plant/s. nutrients leave allot of salts behind. i bottom feed now and every 10-14 days i water from the top for a mild flush. I do add 3 drops of dishsoap when i do this.

waht is the N level of you nutes? they need N the whole time also. That could cause this issue also.

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flush the plant dude it will help drop the salts. i had to do it 3 weeks ago on a friends plant work a treat

I'm in a hydro set up so just flush with 100% water? or do the soap thing, I don't know the N level or how to look it up.....

WeedMiller said:

I'm in a hydro set up so just flush with 100% water? or do the soap thing, I don't know the N level or how to look it up.....

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no soap but clean your res good then just use the water for a day. then go back to your schedule for feeding at 75% amount. also check out the roots of a few plants and take a pic or 2 please. the roots have all the answers most of the time.

fyi hydro means res and the ones i know who grow the best in hydro clean there res every 10 days give or take sometimes you have to wait a day or 2. Some i know use a bit of hydrogen peroxide in the first water after clean. I can say this you are using so much its hard to tell what is happening with the nutes. I would get the best grow which is Dyna Gro Foliage Pro. In flower you use 250-300 ppm DG-FP and then your special bloom nutes. What is your ppm lately in your res? i hope you got a ppm meter and check it daily as also ph which should be 5.5-5.8 in your res with hydro. water temps should never exceed 72F if it does then you have to cool it with frozen water bottles. Hydro once dialed in is the way to really grow.