got a problem +rep for good diagnosis

here is my set up
1.2x1.2 secret jardin grow tent
6" exaust system air extractor fan
6" filter
5" rvk intake fan
600w hps
5 air pots with various strains in coco
1 dwc bubbler
temps lights on 79f
lights of 69-71f
nutes canna coco a&b,cannazym,and calmax for coco
dwc nutes ionic soft water grow
watering at 6.4 for coco
dwc bucket ph 5.8 using minimal nutes atm as only young clone

i have always done all my grows the same way and have had great results as i have like three on at the moment (all on here) and this is the only one causeing me problems and i have been scrathing my head as it is effecting all my plants that have been put into the grow room at different times it always effects the fan leaves first aswell here are some pics, and are in veg 18/6 with lights

it always starts from the tips of leaves aswell?????????????????????????????????????

anybody?????????????/

Have you flushed it real good and then slowly add nutes from there on at maybe 1/4 strength to start and see if recovers and how long has it been doing this ??

done it already and it started on just the two plants to begin with then it started on the others as i added to the tent -i only flushed pic 2/3 as the others where just potted and given next to no nutes ??????

Your minimal nutrient regimen is not working for your small ones. I examined all your pictures and it appears you are causing nutrient toxicity then leading to a ph lock. Good thing you are in hydro because you maybe able to correct it. It will be faster versus if your medium was in soil. I would flush those babies. Then recalculate your nutrient regimen for your next cycle so it does not happen again. When you re introduce nutes again to your existing babies divide it by half and go from there. Question do you go by the feeding schedule of your nutrient line?

calicat said:

Your minimal nutrient regimen is not working for your small ones. I examined all your pictures and it appears you are causing nutrient toxicity then leading to a ph lock. Good thing you are in hydro because you maybe able to correct it. It will be faster versus if your medium was in soil. I would flush those babies. Then recalculate your nutrient regimen for your next cycle so it does not happen again. When you re introduce nutes again to your existing babies divide it by half and go from there. Question do you go by the feeding schedule of your nutrient line?

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i stick to cannas chart for my coco but at half strength and ionics chart for my hydro my clones are doing fine im making its just from when they have been transplanted they have all started going brown on the tips wtf is it ?

the time i have waisted trying to fix this problem i am just going to go plant them all in the woods and start again on this one i think its a desease i have done all my grows the same when it comes to feed ,temps ph every think i am batheled as to what it is i have looked into this aswell Chlorosis - which is the yellowing of plant tissue caused by a shortage of chlorophyll synthesis.
Necrosis - which is the death of tissue

calicat said:

Your minimal nutrient regimen is not working for your small ones. I examined all your pictures and it appears you are causing nutrient toxicity then leading to a ph lock. Good thing you are in hydro because you maybe able to correct it. It will be faster versus if your medium was in soil. I would flush those babies. Then recalculate your nutrient regimen for your next cycle so it does not happen again. When you re introduce nutes again to your existing babies divide it by half and go from there. Question do you go by the feeding schedule of your nutrient line?

Click to expand...

I second Calicat. This definitly looks like nute burn, As well as nute lock out. you need to flush all of these very well, and check the ph of your water.

Flush... Lower the ph to 5.5... Feed 1/4 to 1/2 strength Nutes

GenePerfect said:

Flush... Lower the ph to 5.5... Feed 1/4 to 1/2 strength Nutes

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I dont think a flush is going to help because the dwc plant is affected soooo ya. How high is your light? Those plants would do fine with a 600 at 5 feet from the top of the canopy, whats the temp at the highest point of the canopy, 105? lol

start a new batch - try it without the calcium booster crap - coco hoardes calcium, locking out nitrogen and raising your ph
also - what ph did you swell that coco with - if you just used tap to fluff your brick, your ph will be buffered around 7 to begin with - way too high for coco
calcium adds are rarely needed unless you're using r/o water in a hydro grow and rarely even then

check the ph of your runnoff from that coco - if it's under 5.5(doubt it) or over 6ish(prolly), adjust accordingly

ima say that calcium is at the root(lol) of your issue

the bushy plant with the deep green growth exploding from the leaf veins appears to be a day or so into recovery
what have you done different there?

i just saw that you're watering the coco at 6.5
running 5.2-5.5 ph water thru till good runnoff then water/feed at 400-600ppm and ph 6
do this for 1 half of the plants
wait aday or 2 and see if that doesn't clear it right up

So how your water ? has your ph changed coming out of the tap ??? any change in tds befor you mix your water ?? if not you may have early stages of a slime or a mold on you roots I think we all agree what ever is happening is with your roots right ..theres a really bad ass tea thread on here that might be worth a look hope you find the answer you seek

Phosphorus deficiency written all over these plants, probably because of a calcium/magnesium abuse.

Flush

Re-PH

Low Strength Nutes

problem solved found out off my mate who i brought the intake rvk off (the only thing that weren't brand new) that he had the same problem with hes and it destroyed the plants in hes.he used the same intake agian moved it to another and it destroyed all hes others 4 weeks into flower i went f**cking mental at him for not telling me. he still doesnt no what caused this but he brought the fan back and made him buy all my grow tent and equipment and food for the same price i paid for not telling me . lucky enough i have a shop very local to me i will be going down tommorow to buy new tent and food and a cool shade. i have been very lucky not spreadind the shit to my other grows i have ( scrog 3x250w red cfl experiment , 9 month old mothers 5 weeks into flower ). i have just germanated a blueberrry seed and the doctor seed today they will be going in the new set up

Ninjabowler said:

I dont think a flush is going to help because the dwc plant is affected soooo ya. How high is your light? Those plants would do fine with a 600 at 5 feet from the top of the canopy, whats the temp at the highest point of the canopy, 105? lol

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no my temps are read from my canapy, above light and from floor the max temp in there is 81f loooooooooool and that is very rare usaully 78-79 tops

budman111 said:

Phosphorus deficiency written all over these plants, probably because of a calcium/magnesium abuse.

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only got the cal max when i thought it was a calciium def and only gave it 1/4 strength

shagalicious said:

i just saw that you're watering the coco at 6.5
running 5.2-5.5 ph water thru till good runnoff then water/feed at 400-600ppm and ph 6
do this for 1 half of the plants
wait aday or 2 and see if that doesn't clear it right up

Click to expand...

every grow i have done the same never had issues with this and my run off ph is 6.2 and i water from 6.3-6.5 never had a problem in the past and why is it happening to the one in dwc with minor nutes with ph at 5.8?