Do I go 48hours dark before 12/12 or just 12/12 ?

Hi please could I ask if I should go straight to 12/12 or do the 48hr thing
. I am in cocohydro60/40 day 33 of veg 3x 600w hps 2x600w leds 3.3m x 3.3m space temps 24oc /25oc humidity 50 day 65 night running lsd gth dinachem whiterussian and 1 gsc feeding canna line nutes added co2 a weekago . Also do I need to renew co2 for the stretch? my ec is always around 1. and it looks like 2 plants find this too strong with light green tips but the rest may not be getting enough although can't see no other signs .New growth seems a lot lighter green recently I don't know if I am clearing co2 well enough at light's off as have no ppm meter for co2

No need to do any dark period just flip to whatever cycle u plan to flower with

New growth is always much lighter green then the rest of the older growth.
Tough to really gauge anything colorwise on ur pics because the colour of them is weird from your lights.
I can't comment on the co2 because I dont use it but I'd say your plants looks great and should provide u with some nice smoke

I'm not sure how much data there is on putting them in the dark. It's up to you. The one time I know this is useful is for autos when they refuse to kick into flower.
Looks great so far!

I've done it both ways. The 24-48 hr dark period seems to kick them into flower mode a little quicker, but that's about all I noticed, maybe a little more stretch. Since I started running perpetual, I stopped doing it.

Dylanfurlong said:

1)Hi please could I ask if I should go straight to 12/12 or do the 48hr thing
2)Also do I need to renew co2 for the stretch?
3) I don't know if I am clearing co2 well enough at light's off as have no ppm meter for co2

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1- go directly to 12/12 when ready to initiate flowering cycle

2- renew? I use c02 at lights on daily in flower and off at lights off -through any cycle of flower. my flowers continue to grow like they did in the veg room, sometimes doubling and tripling their height til they kiss the lights=perfect!
3- clearing c02? I run a sealed room, I do not use outdoor air for anything, no exchange except incidental from an open door spring cleaning etc. I dont clear anything. my c02 stops at lights off and restrts at lights on in flower.^^
some c02 is better than none. air flow is important. air exchange is good for you too, dont waste c02, get a timer or a meter for best results.

good luck

Never let your immature flowers get photosynthetic burn

just flip 12x12 once you have enough veg in

good luck

Plants grow the fastest ever during stretch so that's the time to have lots of CO2.

I feed my plants a good dose of Bloom and some Big Bud about a week before I flip to 12/12 with no dark period and they are popping out lots of flowers by the end of the first week tho it differs with strain. Sometimes in just a few days they are showing lots of hairs.

An EC of 1 shouldn't burn any plant so I'd be looking at other culprits if you think it's a problem. Lots of plants get light green/brown tips so if it's not burning leaf margins I doubt it's nute burn. Could be nothing more that over thinking a problem where one doesn't exist which is very common with newer grower in particular.

Hi well I flopped them to 12/12 two days ago I have been feeding at an ec of 1. Now for the last feed and haven't seen no burns today . In fact I have one plant with slight brown patches on leaf which I'm guessing is calcium Def? I am wondering if to add calmag although I am running canna line nutes the coco may need more calmag than the a and b are providing? How much would I add without burning or locking out? Or should I add amino acids for the calcium uptake to be better, the co2 is still running at lights on and they get fed 70ml of canna a ,and 70ml canna b 50ml of cannazym , Into 45 litres of water phd down to 6 @ the end . I have been watering every other day lately as it always seems moist the coco. Although I am in 60 0/0 coco 40 o/0 hydro mix.

Do not take this as critcism, well, distasteful or bad spirited anyway....Running c02 if not in a totally sealed recirc room, will only be truly beneficial once you have things dialed in. It seems like youre still figuring things out. I would suggest cutting off the c02 for now and get your room, strains and nutes dialed in, then add the c02 in and play with it. start pushing your plants a little at a time. C02 is only used by the plants during lights on, thats why people only run it then. Dont think its harmful at lights out but no need to waste it. Recirc setups need supplemental c02 as no fresh air is being brought in. The only thing the fresh air has that the plants need is c02. I assume most people in a setup like that are running ppm controllers with a photo sensor as it is very trick to do so without one.

Cletus clem said:

Do not take this as critcism, well, distasteful or bad spirited anyway....Running c02 if not in a totally sealed recirc room, will only be truly beneficial once you have things dialed in. It seems like youre still figuring things out. I would suggest cutting off the c02 for now and get your room, strains and nutes dialed in, then add the c02 in and play with it. start pushing your plants a little at a time. C02 is only used by the plants during lights on, thats why people only run it then. Dont think its harmful at lights out but no need to waste it. Recirc setups need supplemental c02 as no fresh air is being brought in. The only thing the fresh air has that the plants need is c02. I assume most people in a setup like that are running ppm controllers with a photo sensor as it is very trick to do so without one.

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Hi my room is sealed with every dialed in .co2 does not run at night because it would effect the plants and make them go green , as harley smith says on you tube 'co2 will always benefit plants from 30 0/0 - 50 0/0 ( being around the lower percentage if not dialed in) I can already see huge difference using the co2 .huge. but yes my last post is about adding calmag to coco if it needs it and if the light brown spots are cal deficiencie , I know it's a lot better to be under than over fertilizing so soon as I get some good advice on what to do then I'm sure my co2 and room will be working at maximum effect thanks for the reply

Are you lifting the pots to see how much water is left in them @Dylanfurlong before watering again? I know coco is supposed to stay moist but still should be drinking up a lot of water before getting another good soak.

I've heard often that coco needs more CalMag so adding about half the max amount isn't likely to hurt any but if it's only a leaf or two that have spots then it's not likely low Ca as a lot of leaves would be showing spots if it were.

Are you feeding every watering? I usually alternate between feed and just water but I'm not familiar with your type of nutes. If they aren't showing burn then it should be OK.

OldMedUser said:

Are you lifting the pots to see how much water is left in them @Dylanfurlong before watering again? I know coco is supposed to stay moist but still should be drinking up a lot of water before getting another good soak.

I've heard often that coco needs more CalMag so adding about half the max amount isn't likely to hurt any but if it's only a leaf or two that have spots then it's not likely low Ca as a lot of leaves would be showing spots if it were.

Are you feeding every watering? I usually alternate between feed and just water but I'm not familiar with your type of nutes. If they aren't showing burn then it should be OK.

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Hi yes my nutes already have cal and mag in them but like you said coco needs more I think but adding it to my nutes or adding it by its self with just water is what I'm not sure of because the part a and b of my nutes are balanced so if I just add cal and mag could it lock out or unbalance other nutes . I feed on every watering but some times drop the ec every 2cnd water lateley I have just been watering every 2 days . The hydroton makes the coco even more air rated . Every time I have tried going over 500ppm using coco and canna nutes I get burnt tips on last grow anyway . I got very very slight light green tips on this grow when I reached 500ppm / ( around 1 ec. ) a week ago but my last feed was exactly 1 ec and I don't have burns . I know some people go to a ec of 2. Eventually but this just seems impossible for me . If I had to guess I would say I am in the range what the plants need but at the bare minimum , I don't want to burn em I'm in stretch atm don't need any hermies at all as all 8 of the white Russian are reg seeds so could have males as it is all others are feminized just hope four w/russians are female.

Bound to have some males from reg seeds. Good time to collect some pollen and make some free beans.

You would be totally safe adding CalMag at half the strength it says on the bottle and hopefully you've upped their Bloom nutes already. They need extra food during the stretch but feeding slows right down shortly after and by week 5 their need for N goes down tho they still need some. Extra S helps to produce more resin and most Bloom boosters have it but Epsom salts can supply some along with Mg.

It can take growing the same strain a few times before you get it dialed in so taking a few notes helps.

When you let the coco dry out the ppm will spike. I usually try to be at 3-4 feedings per day by the flowering cycle this way I can run higher ppms without worrying about burning the plants.

Yes these posts make very good sense thanks . The canna boost has a lot of plant extracts in it as far as I know. And it worked great on my last grow which was my first grow . Widow/amnesia haze was powerful and huge. Hindu just was medium yield and strength blue og was very fruity and potent once cured widow bubblegum was medium all round . I didn't have a clue last time just suckling with the basic ranges in ph ppm and used 2 600w hps and two leds . Now I have stronger strains going and 4x600w hps 2 leds plus co2 but I really can't manage to find out what each plant needs /can tollerate because if I burn them I will be pissed off I'd rather stay under a little just not deficient as a lecturer has taught me too much is way worse lol

Dylanfurlong said:

Yes these posts make very good sense thanks . The canna boost has a lot of plant extracts in it as far as I know. And it worked great on my last grow which was my first grow . Widow/amnesia haze was powerful and huge. Hindu just was medium yield and strength blue og was very fruity and potent once cured widow bubblegum was medium all round . I didn't have a clue last time just suckling with the basic ranges in ph ppm and used 2 600w hps and two leds . Now I have stronger strains going and 4x600w hps 2 leds plus co2 but I really can't manage to find out what each plant needs /can tollerate because if I burn them I will be pissed off I'd rather stay under a little just not deficient as a lecturer has taught me too much is way worse lol

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Coco can be very forgiving. If you water till your runoff is the same as whats going in, youll know right where its at. If things start getting burny, run a lower strength mix through until runoff is the same as it went in

Cletus clem said:

Coco can be very forgiving. If you water till your runoff is the same as whats going in, youll know right where its at. If things start getting burny, run a lower strength mix through until runoff is the same as it went in

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so if I water at 500ppm and run off is 700 what does this mean and vise versa if it goes in at 500 and comes out at 300ppm?

I thin calmag is a must with coco , even the canna site says that there is excess sodium and potassium in the buffer / cation exchange parts of the coco? surley the nutes they make to go with it can deal with this

Your ducting has changed