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Questions [Solved] Coco run off?

DiscoBiscuitt
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So I have a couple of questions about coco run off vs input EC

Here is my input ec from yesterdays watering. 

 

Cheese 650
Rip 620
P. lem 616

5.9 good

And now my run off EC. 

Plem 510
Rip 290
cheese 320

I'm just try to wrap my head around what the ec is telling me about my plants. 

Let's use the cheese for my question as it has the biggest difference. 

Do I take the amount of the run off and minus it away form the input. ( 650 - 320 =330.

Do I need to increase my EC for the next feed by 330? Giving me 980ec?

Hopefully I explained that in a way that makes sense.

 

 

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Topic starter Posted : November 15, 2021 5:53 pm
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Macky
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@discobiscuitt These arent EC reading mate, might be PPM or tds, EC come like 0.9, 1.2 n shit, does your meter have a different setting?


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Posted : November 15, 2021 7:15 pm
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monkeydo
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Here’s part of an article here at Percy’s that explains it. It’s simpler than you think,

Best EC for Growing Cannabis in Coco

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Though coco is a form of hydroponics, it is treated a little differently, as it is not as easy to monitor the EC as it is in a hydroponic system.

After watering your cannabis plants in coco, there will be run off, which is drained away, and then, the coco will begin to dry out.

The plants will drink the water and absorb the nutrients, and the water will also evaporate. When it does, it leaves salts behind, and can cause EC levels to rise quickly in the medium.

Coco should be kept saturated at all times to prevent EC spikes, and these need to be taken into account when testing the feed to find the best EC for your plants.

What EC to feed a Cannabis Plant in Coco

You should always start a seedling off at a very low EC. As the roots form, and the plant grows bigger and heads into veg, you can monitor the feed to find the best EC.

Testing EC of Run off, beginners guide to growing weed, how to grow weed for personal use, cannabis plant deficiency, how to germinate cannabis seeds, where to buy cannabis seeds, best weed growers website, Cannabis Growers forum, weed growers forum, How to grow legal cannabis, a step by step guide to growing weed, cannabis growing guide, tips for marijuana growers, growing cannabis plants for the first time, marijuana growers forum, marijuana growing tips, cannabis plant problems, cannabis plant help, marijuana growing expert advice

Start off, with just 0.2 points over your BG EC, and monitor the run off from there. You should water at least once a day! Stay consistent, and do it at the same time everyday, about an hour after lights come on if possible.

Feed the seedlings, and collect the runoff as it flows out of the pot. Test this water, to find out what the EC level is.

If it is lower than the feed you have been giving your plants, then increase the EC of the next feed by 0.2. if it is higher, than reduce the EC by 0.1.

Monitor the EC going in, and coming out like this for a few days, and your plant will tell you what the best EC is.

This was taken from an article that explains EC

https://percysgrowroom.com/the-best-ec-for-cannabis-plants/

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Posted : November 15, 2021 7:16 pm
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DiscoBiscuitt
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@macky mine reads in microsiemens per centimeter.

1000 is 1EC 

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Topic starter Posted : November 15, 2021 8:14 pm
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Mr_bud
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If there's salts left in from the last feed the run off will be higher on the way out if it's lower your plants are absorbing more nutrients main thing if there healthy just keep doing what your doing being over enthusiastic in the grow room leads to more problems I find from personal experience 😂

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Posted : November 15, 2021 8:31 pm
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DiscoBiscuitt
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So essentially I'm just trying to find the balance for the salt content of the meduim

If the runoff is roughly the same as my input does that mean if found the sweet spot?

Seems counterintuitive to me,  if the values are the same it seems there not taking anything because the salt content hasn't changed or am I just over analysing this? 

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Topic starter Posted : November 16, 2021 10:46 am
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JSH1973
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@discobiscuitt 

It's borderline not the sweet spot in my opinion, any outside factor to stress the plant could knock it out of the very delicate balance it is in, I lower nutes a good bit for at a few days when I see same run off as input

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Posted : November 16, 2021 11:12 am
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DiscoBiscuitt
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@jsh1973 that makes more sense to me.

I'd expect it to go down at least 100/0.1ec.

I mean the plant must lower the salt content if she is taking the nutrients from the water.

 

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Topic starter Posted : November 16, 2021 11:17 am
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JSH1973
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@discobiscuitt 

Take evaporation into account as well, high nutes and low humidity that sucks it out of your plants adding to a build up causing lock out.

What nutrients are you using and what's the in/out EC 

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Posted : November 16, 2021 11:33 am
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monkeydo
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Posted by: @discobiscuitt

I mean the plant must lower the salt content if she is taking the nutrients from the water.

If the feed EC and the runoff EC are the same it usually means the plant is drinking water and taking up nutrients at the same levels that they are being supplied. It’s actually not all that simple but essentially it means you supplying the plant with feed that’s perfect for its current growth stage and this lowers the energy the plant uses to feed and grow.

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Posted : November 16, 2021 2:28 pm
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Huskie
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What @monkeydo is saying is 100% right.

If your feeding at say 1.7 ec and the run off is 1.5 I would increase it by 0.2, so 1.7+0.2= 1.9 future input ec.

If it's coming out lower it means the plant is eating minerals faster than the water. If it was increasing then it would be drinking more water than minerals.

Ideally in a perfect scenario (totally achievable) you would get the same run of ec as input, as you want the plant to take nutrients and water at the same rate.

Coming out low means it's going to be defecient and coming out high means incoming burn or lockout.

As mentioned above by @jsh1973 also, with some evaporation you could expect a slight increase in ec but then that could also mean that you need to water more often.

If you look into the basics of crop steering you will get a better idea of building a feeding schedule ec/feed timings.

That way you can manage your ec and your coco water content depending on which stage your in (veg or flower) 👍

I never grow a plant, it grows me.

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Posted : November 16, 2021 10:24 pm
BubbleHok, StarCodex, Zombie Nation and 5 people liked

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