Hello this is my seconed grow an want to get it spot on what i have to do. In my 1st one i used canna coco soil mix thing and a&b with pk 13/14 for later on but at 1st i just put the seed in a big pot right away an gave them 400ml a day in a 7l pot. But then i found this site in my 2-3week flowering. an someone put me right i hope they said run 4l though them every 2-3 days. Can some one put me right on this what i sould do i'v just put some seeds in now in a lil pot an i just want to know how much warter i give them from seed right thouh till their done thx

youl need to adjust the feeding acording to what the plants need thats the tricky bit with pure coco.
start off with say1-2ml per litre for the first couple weeks then when they start growing or if the show signs of under feed increase it to 3 ml then 4 ml.so by weeks 3-4 you should be on3-4 ml per litre of feed.
some strains that like heavy feeding will like being fed with every water, most ive done can handle this an like it as long as your watering every 2-3 days an dont do it full bang on full strength maybe 3 ml until mid flower.
if they are more prone to overfeeding then its best to feed once or twice a week or when the show signs of underfeeding.

ive found in coco every strain is different an im often feeding one strain a heavy feed every water an others maybe lighter an twice a week feed jus water the rest. itsn more a case of growing the strains out an working out what works best for each particular strain.
good luck on ya grow.

I grow in coco and I don't tailor my feed for each plant - you can find a happy medium that keeps them all happy (for me that's around EC1.5 in veg and 1.7 in flower....with hardwater at 0.6 out of the tap.

Frequency of feeding should not be a control mechanism to regulate nutes imho. You need to regulate the EC of the feed so the plants are happy.

Coco is NOT soil - don't treat it like it. Treat it like it's hydro.

To the OP....goto Canna UK's website and there's an excellent grow calculator on there. That's what I used when I started and it's a fantastic template to start from. It'll tell you how strong to mix your feed with the water you have. Once you've done a grow or two by their calculator you can then start to tailor it as you get more of an idea on what you're doing (and other products to use).

Because growing in coco is effectively a hydro method you need to have and use an EC meter as well as a pH meter. It's a piece of piss to do, but you need to do it. Plenty of into here on how.

GN

ive been using pure coco for 3 years an never taking a ph or ec reading not once. i dont even own the kit to take the readings in the first place. ive had like one problem growing with coco in that 3 years aswell. so id say you dont need to bother with ph or ec as long as your not overfeeding. the coco can manage the ph itself anyways.
might be an idea to check them every now an then but i havnt ever got round to it or ever really needed to.

IMO and IME you do need a ph meter and ec meter



Care to explain that one mate, theres no microherd to buffer it, hydro food has buffers in there

I'm not saying you cant do it without but for a newby to coco I think they are essential

Owd

i jus read that cocos a natural ph buffer although it is limited, so assumed that meant it could adjust the ph of the water to match the soil or something like that, as long as it wasnt way off , i might be wrong though. but anyways ive never had to do it in my 3 years of using pure coco.
i have to say that i use canna coco an NOT coco slabs, if i used slabs i would almost certainly take ph an ec readings before an after.

this advice is bang on mate
also with coco a&b youl find that about half of wot it says on the bottle is about right for your ec. ph 5.8-6.0 in coco

Like I said which is fair enough but if you had checked ec and ph then maybe the link below wouldnt have happened

http://www.uk420.com/boards/index.php?show...=173425&hl=

Or this http://www.uk420.com/boards/index.php?show...=170378&hl=

Its always best to check with meters because you dont know whether your water has changed or not, which if its like mine often does

Owd

Yeah they can also help tell you what's up with the plant. I could be wrong here but I'm pretty sure nitrogen uptake is higher at lower ph while poshphorous uptake increases at higher ph. So an upward swing from 5.5 to 6.5 ish is what I aim for over the whole grow.

The testers are only another few quid (tho a bluelab is worth the money, wish there was a ph version) and gives you piece of mind. One thing I will say though is get waterproof ones, i've killed too many test pens dropping them in the res. Pain in de arse. Buy spare batteries too.

I'd also suggest using a one part feed as it's so much less hassle for the same (or better in my case) results. Don't forget your root stim for veg and early flower found out recently this makes a real difference. Enzymes during flower too. You'll need ph down but use liquid silicone as ph up (not that you need it often) once you're familiar with maintaining your ph and ec you can add the silicone to the res at around 1m per l.

Oh yeah get a reservoir and a pump, will save you making up nutes every day.

Also water every day with oxygenated nute solution, twice a day if you can be arsed (or drip feed with a timer). Makes a big difference.

This all sounds like a lot of hassle but is simple after the first time and saves mucho hassle in the long run. Coco is brilliant but no point treating it like compost.

well one problem out of 10-15 grows aint bad really. still dunno wot caused it i put it down to too low temps at dark as it was winter an temps got to below 10c but fuck knows they recovered after a week or 2 anyways.
id agree it is best to check them at least every now an then, i was merely stating that ive been able to do without for however long, so in my opinion its not essential especially when the kit can cost over 100 quid for decent pens to read with. ( i do know there are cheaper options tho.)
i dont even know wot my water comes out the tap at, a friend who grows told me it was 5.6 around 2 years ago.

at the end of the day the guy who started this topic jus wanted to know how much to feed them. its good advice to tell him to check ph an ec if he hasnt done so im not saying otherwise, but hes gonna read this thread thinking hes now gotta go out an spend money on more kit which in my opinion isnt always needed an if he did his first grow ok without them im sure he can do his second grow better without them aswell. i dont wanna start arguments im jus putting my point of view across which ive gained from my own personal experience.

His 1st grow was in some kind of soil mix Grimweeder. It's a much better idea to pay for the equipment now than than later when you fuck your grow up.

A good example, if he uses the liquid silicone without a ph pen he'll have big problems.

Better to always check it when you start growing then you wont have to check every time when you've more experience.

you can get a ph and seperate ec pen for around 30 quid off fleabay. I got my bluelab for £50 brand new, just look around before buying.

Hi

I'm on my first grow (ever) using canna coco so I am no pro and very much learning as I go but I did get this chart with what to put when and how much (see attachment). I'm growing feminized autoflowering white dwarf so didn't bother with the first to rows just added water with quarter strength a+b for first 2 weeks. The plants were in jiffy plugs so figured they'd have enough nutrients in to begin (educated guess not guidance). Since then I've been following the lowest figures ie 1ml to 1litre of canna a+b soaking them in 7.5 litre then leaving them until the pot weight is the same as when it was dry about 2 to 3 days, then soaking again. Not been able to afford the Cannazym, pk13/14 etc yet but if I can I'll follow the lowest measure guidance in the chart.

Other than the fact I cooked them to begin with they seem to be going ok with this nutrient guide

Hope you don't mind a complete novice posting but I'd like to think the people who put the chart together would have some idea.

thanks mate that is a good guide

No Probelm hope it helps!

yeh thx but if u want the pk 13/14 just go to a hydro shop if u have 1 close the 250ml bottle was only £5

Just started in coco and I'm using AB at an e.c of 1.3 with a background e.c. of 1.0. I'm working on the premise that half of the background e.c. is actually useful stuff as many round here now recommend doing.

I've also added some nitrozyme at 2ml since I have it and read AB doesn't supply enough N.

So far so good; wished I'd gone to coco first without fucking around with NFT. I'm not quite a week in and they're already up with 2/5 showing second set of leaves and looking very healthy.

i've also done plenty of coco grows without ph/ec'ing used liquid silicon a good bit and didnt have problems once. im planning on going back to it but think i'll get test pens this time

Nice touch cheers for the tip.