Quite a few problems (Pics and lots of detail)

Ok so iv got 4 plants growing in 4 seperate DWC buckets (home made system) that were started off as clones around 5 and a half weeks ago. the plants suffered from high res temps around 2 weeks ago causing them to have root slime/rot, iv fixed this issue by using Cannazym its removed the slime and the roots look slightly healthier and the res looks cleaner, the temps in the res went up to 26c (78f) and i new that was way too high ! they were at that for about a week, i kept adding cool water to the res to bring it down but it didn't last long, a hour or so, the water took the res temps down to 20-21c (68-70f) which i no is the correct water temp level to keep rot away.



The temps around here have cooled down now seeing as its winter and the rooms temp is at a constant 24-27c (75-80f) and the res temps are always 21 or below and are controlled by adding bottles of ice when the res goes above 21c (70f) that take them down to 18c (64f) for a good couple of hours.

2 weeks from when the rot started the plants haven't grew at all, iv started seeing small signs of growth on the top but it seems to be very bunched together ?

Not sure why but the plants still dont look healthy at all ! im hoping the cannazym will start fixing this problem within the next few days.

Alot of the leaves have some sort of problem too the newer leaves at the top are curling down and alot of the lower leaves and leaves in the center of the plant are getting like a burnt look to them with dots of brown/burning all over, the tips of these leaves are curling upwards the stems on them seem to be very purple in colour ? i thought it could of been nute burn but my ec is at 1.0 and im 5 weeks into veg and i no that's low !





I switched them into flowering 2 days ago and iv just started adding flowering nutes, iv upped the ec to 1.2 but the canna website says its needed to be at 1.6, just wondering what the effects of low nute levels will be on the plants ? could this be part of the reason that there stunted ?

Bit more info:

Lights: 4x 400w Grolux bulbs.

Res size: 40l of water in the res.

Nutes: Canna Hydro A+B

Other products used in res: Cannazym, used rot stop a while back but stopped using that as it upped the ph and didnt do no good at all to my plants, also used liquid oxygen had H2O2 in.

PH: 5.7

EC: 1.2 atm 1st week into flowering.

Air flow:3 fans blowing around the room and a AC unit to keep cool air also a inatke from outside for more cool air.

Strain: Clones off some sort of cheese plant which has been going for around 4-5 years from a friend ment to have pretty good genetics.

Res change:Change the res weekly and topping the plants up as needed (Dont seem to drink much ?)

Room temp: 25c (77f)

Res temp: 21c (70f) or below

Aeration: 2 air pumps both with 4x 2.5 Litres a minuet, Each res has 5 litres per minuet (300L per Hour)

Humidity: 31%

Other: they all have a drip feed going to the top of the pot on for 15 mins off for 1 hour then back on

these are my main questions:
-Whats the correct ec/ppm for the first week of flowering ?
-Whats wrong with the new curling leaves
-Are the other leaves suffering from nute burn ?
-Whats wrong with the purple stems is this ment to happen ?
-any idea why there stunted and why they haven't really grown much for 2 weeks


Thats about all i can tell you but if anymore info is needed just ask and ill tell you, any pictures needed ask aswell as i can take them instanty and post them as im sat here doing NOUTHING At all... any help on any of the problems you see above will be greatly appreciated as im a first time hydro grower i need a push in the right direction.

+Rep for good answers.

Thanks in advance.

here mate i think this thread mitre help you
https://www.rollitup.org/dwc-bubbleponics/473122-dwc-information-thread-beginners-problem.html

these are my main questions:
-Whats the correct ec/ppm for the first week of flowering ? there is no set ppm reading its different per grower/plant, just start them of small amount and then up the nutes as the get older and stronger
-Whats wrong with the new curling leaves could be down to hot maybe your light has been too close.
-Are the other leaves suffering from nute burn ? from the first pic i think it is nute burn, but could also be a deficeney dont quote me on that tho
-Whats wrong with the purple stems is this ment to happen ? i have read that if you re getting too much purple on ya stems it means that you are giving themtoo much nutes!
-any idea why there stunted and why they haven't really grown much for 2 weeks<<<imo it all boils down to all the stress they been threw.

i cant understand how its nute burn when the EC is at 1.0 but the website states that the ec should be up at 1.6 ! this is what confuses me, also what happens to plants if the nute level is too low ?

if the ec level is low just means you are starving your plants.
I haven't checked the ph on my plants for 4-5 days now as i haven't got one need a new one, and they are looking really well, so lowering you ec/ppm levels imo it wont bother them that much!

Hey bro
I use flush when i change my veg nut to flower nut.
And better u start your new nut by the less level
I advice flush your plants that have this prb

^^^what i do

Thanks guys, iv been away from my plants for a few days going back tmmoro night as iv had some stuff to do, left them in the hands of my dad ! hope he hasn't destroyed them like he did last time !

i might say that there being a little under fed as the problem, not in all elements but maybe just a few. have you been adding in trace elements such as calcium and magnesium as well as maganease? you wont need much of those trace elements if used in conjuction with a standard NPK but without them plants can start to detiriorate. im not saying THAT IS your problem, but its well worth looking into

thanks knourgro ill look into it maybe try adding some of these after i change them on sunday, doing to raise the ec a bit more on sunday too as they havent burnt after rasing it to 1.2, i think the burn's in the pictures above were because i added the nutes straight to the res while all the roots where still in there ! i use buckets now to fill teh res up mixing the nutes befor i put them into the res.