Unofficial Coco Coir Growers Thread

[gaiusmarius]

wow a lot of posts appeared while i was writing my reply lol. i left the window open for a few hours lol.

anyway, if your coco ph is too high, that could explain things. like HDROJUNKIE said you just keep watering with a lowish ph and it will correct it. maybe run a load of water through with a 5.5 ph till you notice the run off ph going down. but if it's not higher then 7.0 you shouldn't really be having a problem because of it, as long as your nutrient solution has the correct ph of between 5.7 and 6.0

true this is not the best time for this kind of problem to creep up.

 

[Guest]

bramski,,pale leaves can also be a sign of underfeeding ,,i start clones @1.0-1.2 ,,maturing plants like yours i'd expect to need at least 1.5,,

coco usually handles ph fluctuations with ease in my experiences

 

[gaiusmarius]

good point hazyfontazy, either way you will soon know by checking your run of ec/ph values. also by watering more often with a decent nutrient solution it should soon straighten things out.

 

[Guest]

Got a few quick questions for you coco experts out there. First, I have been scanning through this thred, and almost everyone says coco should be watered in a run to waste setup. Is it possible to use a recirculating drip system using coco? Second, has anyone out there ever used this type of coir made by sunleaves? It is very coarse, and I was told it would work great in a recirculating system. Also, has anyone had any experience using Monkey Juice from Advanced Nutrients. My local grow shop gave me the stuff to try out, and wanted to get some feedback on it. This will be my first attempt with coco, and I want to make sure i have all my ducks in a line. Any info will be greatly appreciated. Thanks

iv used it before, wont hold water very well and has a problem with Ph buffering, be sure to flush it very well because its loaded with salts and other crap, next time search for black gold coco mix or coco gro.

http://www.sungro.com/products_displayRetailProduct.php?product_id=45&brand_id=13

 

[Bramski]

Thanks guys, going by your advice it looks as though my current situation is a mixture of low EC over an extended period of time, infrequent watering, and a high PH in the new coco upon transplant.

I gave them a drink of a 5.6ph/1.2ec solution and I'll continue to do this daily. Hopefully they'll pick up soon. Luckily I have a nice healthy bunch of rooted clones to go into the room also, so it's not the end of the world. I've always drip fed my coco and this is the first time I've hand watered because my drip system is being used in the NFT setup on the other side, if anything it's been a valuable learning experience. I just hate fucking up good plants.

 

[gaiusmarius]

let us know how things go on, they should start putting out new healthy leaves.

 

[yes_i_cannabis]

how often do you guys feed nutes useing coco??i hand water and have been feeding evry second day with a flush of feresh water evry week or so...

 

[bongoman]

I'm feeding daily with 20% runoff and no flushing until the end. This is based on bonecarver's suggestions here in this thread.

 

[Guest]

I feed with PBP at every watering.

 

[jimjay]

Thanks Hydro Junkie and Gaiusmarius,
I went and got a pump yesterday it is the eco 264. The only problem now is that i am going through my res to quick. I feed four times a day at 1 minute and my rez is empty every two days(15 gallons). Does this sound like too much run off or should i just get a bigger rez?
I was thinking about using a garbage can like i see Gaiusmarius uses but he also has over 100 and i just got 18.............

 

[northcoastmed]

Well to be honest I havn't seen anyone really use E & F with Coco.

Using cococan croutons in Coco Tek AB cubes...dealing with serious nute burn from previous setup and freezing cold temps. Both issues are getting better but it will take some time.

Anyone else using the cococan croutons? I can't find any info on this product. It was given to me to "demo".

 

[gaiusmarius]

hey jim jay,

if you are recirculating your nutrient mix and it's all used in 2 days, then you need a bigger tank indeed. i like a tank that last a week, so i'm not having to fill it every time i check on the grow.

if on the other hand your system is running to waste, then it depends on how much run off is happening. about 10% is enough with multiple waterings.

 

[Kenny Lingus]

Hi!

My grow looks fine, except for a possible N excess and K-def in a few plants (diff. strain). I just wonder if someone could say what the think may be the problem:

I'm in the 4th week of my 8 1/2 week slab grow. I'm just adding pk and the values are: pH 5,6-6,1 and EC at 1,4.
-I run to waste and dripwater every 3rd hour, for 4 minutes, when lights are on. (5 times, 5 plants in slab) I try to keep the runoff at 5-10%. (EC in runoff is like 0,5 I think).

Should I change anything or just wait untill it grows off maybe?

 

[jimjay]

hey jim jay,

if you are recirculating your nutrient mix and it's all used in 2 days, then you need a bigger tank indeed. i like a tank that last a week, so i'm not having to fill it every time i check on the grow.

if on the other hand your system is running to waste, then it depends on how much run off is happening. about 10% is enough with multiple waterings.

Thanks Gaiusmarius,
Everything else is great. they only been veggin for 2 days and they are taking off fast. It was your power plant grow that converted me though.

 

[gaiusmarius]

Hi!

My grow looks fine, except for a possible N excess and K-def in a few plants (diff. strain). I just wonder if someone could say what the think may be the problem:

I'm in the 4th week of my 8 1/2 week slab grow. I'm just adding pk and the values are: pH 5,6-6,1 and EC at 1,4.
-I run to waste and dripwater every 3rd hour, for 4 minutes, when lights are on. (5 times, 5 plants in slab) I try to keep the runoff at 5-10%. (EC in runoff is like 0,5 I think).

Should I change anything or just wait untill it grows off maybe?

are you in the 4th week of 12/12? or are you still vegging? it would help to see a pic of a plant. if you are in week 4 of 12/12, then your run off seems very low, by that time my run off is normally at the same level as my nute solution. even if you are still vegging, then it seems they are hungry, specially if the run off ec is 0.5 are you using coco specific nutrients? what makes you think they have an excess of N? seems strange with such a low run off ec.

i just realized you must be flowering as you are using pk. the pk can also cause nute burn if used at the wrong time or dosage for the plants. i only use the pk once in my tank at about week 5 of 8 and a half weeks.

but i think in this case you are probably under feeding them with A+B and over doing the pk?

i'd love to see a pic, to be able to be more certain.

peace

 

[Crazy Leaf]

woud it be ok to use PK 13-14 in the 4th week? i think my plants in need of K , so yeah , any replies are appreciated

 

[gaiusmarius]

hey CrazyLeaf

there are two ways to use the pk 13/14. some people give it from week 2 of 12/12, others, like myself only use it once 3 to 4 weeks before the end. normally speaking your plants should be ok without pk, the A+B are complete ferts so nothing is missing, it's more about the right amount of nutes and the right ph.

 

[Bongojaz]

hey CrazyLeaf
there are two ways to use the pk 13/14. some people give it from week 2 of 12/12, others, like myself only use it once 3 to 4 weeks before the end. normally speaking your plants should be ok without pk, the A+B are complete ferts so nothing is missing, it's more about the right amount of nutes and the right ph.

i'm glad this came up. wouldn't the correct way to use pk in coco be for one week? the bottle says to use it once, adding it to a full nutrient tank. if you're hand feeding, then you'd have to use it for a full week, if you use the manuf. suggested use. anyone doing this? i will be when the time comes.

 

[HYDROJUNKIE]

their was a test grow done awhile back by Bramsky,...he went through 5 runs using different dosages over different periods...
1ml./ltr from weeks 3-6 was the best that he came up with...

I use .75 ml per gal. from weeks 2-7 and they just get fatter and frostier till the end.

 

[Bramski]

The thing with PK is that as long as you cater for it in your overall EC level you can't go far wrong. I've totally zapped plants with it and they looked like dead parrots within a few days of adding it to the rez, but this was purely through carelessness. Used sensibly all it does is fatten up your buds. I don't think there's a wrong time to add PK1314 really, as long as it doesn't take your EC dangerously high.

Here's some info from Overgrow cache regarding PK, there's a few different opinions and experiences from it's use.

Canna PK13/14

(Dogbert) sets the standard. This one works!! WARNING – watch out! You can burn your babies with it if you are not careful. A must use additive. The bottle recommends to add one dose 4 weeks before harvest. Many users recommend adding a half strength dose every week for the last 4 weeks.

(BiGgErBud) I use the complete Canna range, Rhizotonic, Cannazym, vege..... flores, PK 13-14. Great products!! only advice I would give is to use PK at half strength from week 4 to flush as it's strong as Bramski and now Dogbert have found out!

….then PK13-14 last 4 weeks helps buds pack on weight.

(Bramski) I have searched the net for info on PK 13/14… (Info obtained from - http://www.hydroshop.com.au/Informa....asp?sheetNo=82)

”PK 13-14 is a pure potassium and phosphorous mix that stimulates the plants natural sugar production to such a point where essential oils are literally dripping from the plant. PK 13-14 is derived from potash and all the outdoor freaks would know how beneficial potash is for tightening up those colas. “

I have played a little with this product and was astonished by the increased flower development and improved flower set on the plant especially with such economical dilution rates.

(budmonster) according to the guy at the hydro shop pk 13/14 is the same as liquid potash which sells for a 1/4 of the price.. It makes you wonder! In other words, any product that is really high in Potassium and Phosphorous, if applied at the correct time during flower, will cause swelling of the fruit/flower/bud.

So maybe even just maxxing out the normal flower nutrient at week 3-4 of flower would work just as well as some of these expensive concentrated bloom additives, but a word of warning, you will get a more nutrient taste in the bud if you use pk-13/14 (or were to max out the flower nutes.

This is why I really like a locally made product for using in the flush stage called Ozi-tonic. It’s a 100% organic product based on a beeswax formula and gives your hydro buds a lovely almost outdoor (organic, orgasmic!) sweet smell!

(Dutch master) ...always check your Ph and EC (ppm) AFTER you added PK13-14. You will see there will be a substantial (increase) in the salts of the solution you are using.

(haze5) I use bio nova's BN p-k 13+14
This product contains 13% p2o5 and 14% k2o. phosphor makes for the development of a healthy, extensive root system and for exuberant flowering. Potassium prompts the flowering of the plant and the flowering potency. The combination of these two materials in a bio-mineral shape can indeed be called a super-bloomer. For this reason, this directly absorbable fert is essential to the flowering stage of any crop.
P-K 13 + 14 should be used in addition when using BN hydro or soil super mix.

Dosage
1st week of flowering :25ml/100l
2nd week of flowering :50ml/100l
3rd week of flowering :75ml/100l
4th week of flowering until flush :125ml/100l

(HiLlBiLlY BuDmUnChEr) At 3 weeks from harvest I give the plants Canna ‘PK 13-14’ in with their nutes and this makes them fatten up in the bud department….it is very easy 2 f*ck up with this stuff in hydro. Only use it once to a full tank and NOT in your top up water or you'll get nute burn like Bramski and I did

(oldpink) PK 13/14 is mixed into your nutrients at 15ml per 10L. Mix it into your normal nute mix for 1 week only then back to your normal nutrient mix. pH. will raise as well as your C.F. reading. PK 13/14 is used 3 weeks before harvest

(Unregistered) I have revised my usage of Pk 13/14 after 6 or 7 test crops. Im using it every week now at the rate of 1ml per liter of tank soln. I have found greater assimilation and benefit with the lower rate of addition over a greater period, from around week 2 to week 6 of flowering.