Help....Canna Coco and nutes?

[EastCoast710]

you can see on the sides.. turned yellowish brown.?



hey guys having issues pop up all the sudden.. right before I'm supposed to go into flower....

this droop.. red stems to leaves.. and this weird shit on the tips of the sides of the leaves..

my water ph comes out the tap at 7.1 .. not sure on ppms as my meter broke.. wont turn on?....

but I took some coco out the pots. put into the tap water.. and got a ph of 5.8..

I have been feeding 6.0-.6.2 ph..

and this droop.. and yellowing... the bottoms of the plants are fine..

 

[ChaosCatalunya]

Rootzone temps ?

At this time of year, temperature dropping, coco plants often start playing up for me, personally I think coco is either more conductive to cold(/heat) than soil, or something in the microbes/bennies in soil stops them from showing deficiencies.

Either way, think about checking the temp in the roots and your feed water, freshly oxygenated, 22°C. As you have a problem, why not flush through with plenty of fresh nutes several times ?

 

[EastCoast710]

was waiting because I had thought I might have overwatered them. honestly they were all so droopy.. that waited a few days they look a little bit better. but its starting to get light green.. with those spots.. also has spots between the veins on the leaves also.

reminds me of cal or mag.. or phos issues

first time in coco.. might just scrap the entire grow.. and quickly get shit rooted and fucking sog

 

[ChaosCatalunya]

You cannot over water coco, it is not soil, letting it dry out will fuck them up though. You should use some zym as well now to clean us any dead roots from this

People who have done tests often say that watering several times a day is best, all instructions say at least once a da.

You can also put more oscillating fans in there to speed up transpiration (all outdoor growers have seen how much more plants drink on windy days) if you want to invigorate them and make sure they are healthy and drinking

 

[EastCoast710]

I checked roots.. roots are perfect white.. amazing nice root system on every plant.. its not every plants..

not letting them dry out. but the droop started right after the last water.. and has kind of started to go away as they are losing some water int he pots

 

[EastCoast710]

here some more pictures out of the HPS.

 

[EastCoast710]

opn the sideways 1.. those brownish dots on the fans.. are starting on most of the plants besides a few strains

 

[EastCoast710]

 

[EastCoast710]

and the pic of the nice healthy green one.. is how they all looked up until about 7 days ago or so. i thought at first it was new growth and just a little lighter collored but then these spots started showing up on all but 3 strains.

 

[EastCoast710]

root zone temps are about 70.. to be exact.. 72..

 

[EastCoast710]

 

[LyryC]

looks like Lockout from your EC or PH so id get a PPM meter going again asap!

Have you tried to do a light flush? like .5 EC i think thats around 250ppms as a flush?

the plant looks over watered.

when was it planted and how often is it being watered?

 

[LyryC]

IDK canna nutrients but I think DAnsbuds does if you wanna ask him.

The dots look like potassium build up, and so maybe you have an imbalance within the coco CEC so its holding out stuff

the light green looks like shes not getting her nitrogen but there could be something about the nutrient mobility due to micro nutrients thats holding things back.

i know Calcium isn't considered a Macro nutrient but it pretty much is. Do you have a nice cal/mag you are using with your feed? Epsom salt is a quick simple fix! I know a lot of experienced members like purple frostbyte would have experience with with epsom salts for gardening.

hope this helps a bit brother!

 

[EastCoast710]

IDK canna nutrients but I think DAnsbuds does if you wanna ask him.

The dots look like potassium build up, and so maybe you have an imbalance within the coco CEC so its holding out stuff

the light green looks like shes not getting her nitrogen but there could be something about the nutrient mobility due to micro nutrients thats holding things back.

i know Calcium isn't considered a Macro nutrient but it pretty much is. Do you have a nice cal/mag you are using with your feed? Epsom salt is a quick simple fix! I know a lot of experienced members like purple frostbyte would have experience with with epsom salts for gardening.

hope this helps a bit brother!

I'm using GH's calimagic. stuff.

 

[EastCoast710]

looks like Lockout from your EC or PH so id get a PPM meter going again asap!

Have you tried to do a light flush? like .5 EC i think thats around 250ppms as a flush?

the plant looks over watered.

when was it planted and how often is it being watered?

transplanted from cup to 3-4 gallons of coco in a 5 gallon grow bag.. .. watered 5 days after the transplant as they were tiny .. then growth took off. pots are almost full of roots.. like perfect time for the 12/12 flip.. lol and then I have this hiccup. lol.s

then after that it was 3 days.. 3 days. 3 days.. until now.. wen they are big enough. but with the way they look overwatered I'm scared to water them again or feed or anything!!

 

[dansbuds]

transplanted from cup to 3-4 gallons of coco in a 5 gallon grow bag.. .. watered 5 days after the transplant as they were tiny .. then growth took off. pots are almost full of roots.. like perfect time for the 12/12 flip.. lol and then I have this hiccup. lol.s

then after that it was 3 days.. 3 days. 3 days.. until now.. wen they are big enough. but with the way they look overwatered I'm scared to water them again or feed or anything!!

ok that just answered my last question .

give them a good flush like we talked about , then up the dose to 1.2 EC & feed them every other day for a few days & let me know if you see improvement .i bet you will .
i say every other day because your temps at the pots are only 72 dehgrees , it will take longer for the pots to dry out . once a day will keep them soggy not just moist like you want . colder temps , less feeding hotter temps , more feeding .

keep an eye on new growth for healthyness , the older effected leaves may not change much if at all . you can pluck them as the plant grows out .

 

[Ziggaro]

Looks like a calcium shortage with the burnt tips and the spots. Also see some K or burning issues I think.
If you don't have enough calcium you are going to run problems with K uptake (and mobility of nutrients in general).
Liebig's law of the minimum says growth is controlled by the least abundant resource. Consider what effect that might have if one of your nutrients is out of range. If growth speed is controlled by the scarcest variable, that means the nutrients that you supplied in abundance will probably build up.
As far as plants drooping.. I'd guess if your roots are nice it also has to do with the nutrients. If there is more sunlight than they can process, they droop their leaves to conserve energy.

 

[dansbuds]

another good piece of advice i can offer is get away from them grow bags ! they don't let much air into the root system . go with pots with plenty of holes in them , or better yet , fabric pots . you'll see a big difference in the roots & the way the plant grows .

 

[dansbuds]

Do you have EC & PH meters ? a PH meter especially . & is it calibrated ? the PH is very important in coco growing .

 

[shredGnar]

I think they are under oxygenated. Over watered is a misnomer, just like h3ad always said.

When you feed them the water pushes out the old gases and draws in new ones. This is why I feel hard sided tapered pots work best for coco.

I personally fertigate everyday regardless of pot weight. The trick is to gently flood the top of the pot. So water sits on the top of your coco then evenly pushes/draws gases as it passes thru.

My personal opinion/experience.

Also I switched from h&g to canna about 4 months ago and it was totally seamless.

Just use the base nutes at 1.2 ec (about 7 ml/g for me), I use tap water which is <40 ppm and do not need Cal mag for any stain I have ran.