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yeah thanks. Whilst im getting to the bottom of it, do you think i should put the lights back on a 18/6 cycle or keep them on a 12/12 ?
i dont wanna give them anymore stress than neccessary, but they have kinda stopped growing for the past 2 weeks whilst they were getting sick ?
they been in flower 2 weeks, but i would have expected more growth.
It's ok too flower them at this point,and trying to re-veg will cause a delay in growth.Start by getting the ph and ppm to optimal level's,then we'll work from there. Dropping the water level an inch or 2 might not be a bad idea also.
Dive:stoned:
ok, ive just flushed the roots and media in a strong oxy plus solution. Rinsed them in fresh water and left them to sit while i went to the hydro shop.
On my return, i stripped down the system, disinfected it with oxy plus, rinsed and setup again.
i refilled the res with half strength nutes, and a few ml's of PYTHOFF anti pythium additive per 10 litres...PH'd to 5.9.
I have kept the res level high, touching the bottom of the pots, as the guy in the hydro shop suggested that this was neccessary for the PYTHOFF to get to all of the root ball.
Kept the lights 12/12.
I realise i will have to keep adding the pythoff throughout the plants life as it kills the good bacteria as well as the bad, so without it, the problem would probably return.
I shall give it a week and see what happens.
Will let you know.
Right on.Sound's like progress.
Dive:stoned:
PYTHIUM...PYTHIUM...PYTHIUM.
Yes, all the frantic scurrying about last monday morning, accomplished NOTHING.
Im now cutting my losses, scrapping this grow, and considering a total disinfect of my entire grow environment. This will include, total stripdown and disinfect of entire hydroponic system and growroom, destruction of motherplant and all clones, then an investment in new, fresh stock.
I feel like my entire fucking family has been wiped out.
Im now educating myself on preventative measures, which seem largely to concentrate on a sterile growing environment..which mine has never been.
DONT LET THIS HAPPEN TO YOU.
Im no expert but since your two weeks into flowering it could simply be drawing the energy from the leaves to the bud.
BLACKJACK...look at the roots man...look closely at the leaves...thats no nitrogen deficiency.
I was reading a thread the other day, where this guy kept a grow log and was getting problems. Started of with yellowing leaves...
He was advised to ajust PH.
Leaves got worse..he was advised about nitrogen deficiency...leaves got worse...he was advised about nute temps, overwatering, growroom temps..etc..
Only wen we saw his roots, (grown in DWC)..which were non existant, was the problem revealed.
ROOT ROT.
Im seeing this a lot, growers are battling on with diseased plants, ajusting PH, tweaking temps, adding expensive nute additives, when what they should be doing is destroying everything and starting from scratch.
Obviously, you cannot be too premature with this decision, but in my 10 yrs or so growing experience, i have learned that weed plants are hardy little fuckers..and as long as there are no EXTREME wrongdoings in the growroom, they will be just fine.
You CAN allow the PH to rise a few clicks, you CAN overfert with only minor leaf tip burn, you CAN let your growroom temps rise to 35 degrees, you Can go out and get trashed all weekend only to find upon your return that you forgot to water your plants before you left, and they have all wilted..they bounce back after a few hours.
The agreed opinion is that sloppy monitoring of grow conditions like these will result in a drop in yeild, which i can go along with, but i recon, from a plant that will usualy yeild 3oz, all but the most severe abuse will only result in a drop of about half an oz or so.
I have grown in pots, coco slabs, waterfarms, NFT, DWC, and outside. Over the years i have over fert, under fert, over watered, under watered, used unbalaced PH, burnt the tips with the lamp, ..the list goes on...but i have still managed to scrape a decent crop EVERY TIME.
So, I say...WATCH OUT FOR PYTHIUM..its out there, like a dodgy copper lurking around a corner, just waiting for the right opportunity to make good the arrest.
RR.
I'm trialling some nutrients from flairform and saw this on their website today.
Just read your thread and thought it might be of interest.
Pythoff: Hydroponic nutrient conditioner
yeah thanks. im using pythoff now.
Volak what did your roots look like as they started to get that brown scum on them? Was it sort of reddish and slightly slimy? If so then I might have the same problem on my hands. I'm running a DWC system too.