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New Growers Nutrient burn and ec problem

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Macky
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Posted by: @ukcheeseplease71

than you so much everyone for your advice it can be lonely out there and I’m not young so it’s nice to be able to talk to likeminded people 

This is why are here mate, happy to help Smile

What medium are you in, just to be sure.... coco? Full hydro? Rock wool? Soil? 

The ph you use will differ on the medium


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

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Posted : October 18, 2021 9:55 pm
WoodI2, Zombie Nation, monkeydo and 4 people liked
Macky
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Posted by: @ukcheeseplease71

Also I have a brand new small RO system do you think I should use it 

i think your EC is 0.6, whihc is pretty high for just water, but not too high. If it is easy for you to filter it than do so, but you will to add more calcium to the feed, as it will be removed from the water in RO systems


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

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Posted : October 18, 2021 9:57 pm
Zombie Nation, WoodI2, monkeydo and 5 people liked
Ukcheeseplease71
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@macky I’m doing dwc with an airstone 

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Topic starter Posted : October 18, 2021 9:58 pm
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Macky
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@ukcheeseplease71 Awesome !! MAkes things really easy then mate!!! 

Ok a few more questions from me and I should be able to get you on track. 

When did you last change the res (reservoir)? Is each bucket seperate or do you have recirculating DWC? 

What is the current EC of the res, compared to the EC of the feed before you give it to the plants?

What is the current pH of the Reseviour

What root temps do you have? are the roots getting warm? 

 


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

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Posted : October 18, 2021 10:01 pm
Zombie Nation, WoodI2, monkeydo and 4 people liked
Ukcheeseplease71
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@macky last change 24hr

Seperate dwc

current ec in pic I think I need a better ec meter

i will get back to you about mix ec as there is none mixed

current ph 6.6 gone up since yesterday this is water only

root temp 18degc

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Topic starter Posted : October 18, 2021 10:15 pm
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Macky
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Posted by: @ukcheeseplease71

@macky last change 24hr

Seperate dwc

current ec in pic I think I need a better ec meter

i will get back to you about mix ec as there is none mixed

current ph 6.6 gone up since yesterday this is water only

root temp 18degc

Ok, I would explain all this, but I think this guide can explain it all better than I can in one post lol. 

Check this out mate, itll explain why the pH is rising and shit and how to fix different problem like that in hydro:

https://percysgrowroom.com/ec-and-ph-fluctuations-in-hydroponics/

Take a look Smile

First of pH should be down at 5.8, if the ph is rising, the plant is drinking more than it is eating and you need to lower the EC of the feed 


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

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Posted : October 18, 2021 10:20 pm
Rufio, Zombie Nation, WoodI2 and 6 people liked
Ukcheeseplease71
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@macky 

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Topic starter Posted : October 18, 2021 10:38 pm
Zombie Nation, WoodI2, monkeydo and 4 people liked
Ukcheeseplease71
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@macky thank you very much 

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Topic starter Posted : October 18, 2021 10:40 pm
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@ukcheeseplease71 How we looking mate? Did you read it? Does it make more sense now? If you have any questions man feel free to ask 


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

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Posted : October 18, 2021 10:50 pm
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Ukcheeseplease71
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@macky thanks I will thoroughly read it this evening it was very late where I am so I will have a good look tonight after work 

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Topic starter Posted : October 19, 2021 10:25 am
Macky, Rufio, WoodI2 and 4 people liked
WoodI2
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@ukcheeseplease71, welcome to Percy's and to underwater growing. You'll get straightened out, everyone starts a little upside down. I do a little RDWC from time to time. Let me know if I can help. Your as safe as in your mothers arms with @Macky thou. Have fun man, and good luck. 👍                 peace

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Posted : October 19, 2021 4:44 pm
Zombie Nation, Stootie, Macky and 3 people liked
Ukcheeseplease71
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@woodi2 thank you seems like a great bunch of people on this forum 

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Topic starter Posted : October 19, 2021 5:16 pm
Zombie Nation, Stootie, Macky and 2 people liked
Ukcheeseplease71
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Another question I have been pondering over for a while now for best flavour is soil the way to go I’ve tried soil briefly in the past but was advised to go dwc but ultimately I’m after quality not Quantity what do you experts think 

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Topic starter Posted : October 19, 2021 5:20 pm
Zombie Nation, Stootie, Macky and 2 people liked
Huskie
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@ukcheeseplease71 your plant looks like its calcium and magnesium hungry.

Don't put the plants in plain water, your increasing your deficiency by not feeding.

Follow all the advice given above.

If your using led lights the plants require more magnesium than is usually avail in nutes, especially in rdwc as the growth is extremely fast.

In rdwc your water temp, oxygenation of water EC and ph must be bang on or deficiencies quickly show up.

But again as its rdwc it can be fixed super fast.

Are you mixing your nutrients correctly? Theres an order depending on your recipe

But cal mag first in full res of water thoroughly mix, then add your A mix then add B. Then ph

Not following that order or adding in concentrated forms can mess up your mix.

Certainly use your ro filter your having issues which may be related to hard water (nutes come specific to hard or soft water also).

In terms of the extra magnesium needed by led growers, you just dissolve a tiny bit of Epsom salts like a gram into a bit of warm water then after adding calmag to res and mixing you add that epson salt solution and mix slowly until you get an extra 25ppm reading onto of the reading you had with your calmag then continue adding rest of your nutes and mix.

Once you have added this mix to your rdwc bucket note water level ph and ec, check back few hours later if ec rises by 0.1ec then lower the initial ec you used by 0.1 next time etc

Example rdwc ec 1.6, five hours later ec is 1.7 so I would add plain water and get it to 1.5 (that's what the plant wants)

Apart from that your room air temp must be around 83-83f in order to achieve leaf temps of 82f min, it may not be your nutes but your environment instead. Make sure humidity is adequate for that temp so let's say around 65% (you need to have a quick look at vpd - vapour pressure defeciet)

If your environment is not conducive to transpiration your not going to pull in the necessary nutrition for the plants via the rootzone.

Once you get rdwc you will love it, yes water temps must be 18c-21c and you may not have enough air stones, water temp is controlled via a water chiller 👍 5.8 to 6.0ph veg, 6.2-6.0ph in bloom

Good luck✊

I never grow a plant, it grows me.

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Posted : October 19, 2021 5:25 pm
Zombie Nation, Stootie, Hart and 3 people liked
Ukcheeseplease71
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@huskie-2 thank you so much for sharing your expertise that’s a solid bit of information right there I’m feeling like I might need to have a serious recalibration on how I’ve been doing things thanks again 

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Topic starter Posted : October 19, 2021 5:32 pm
Zombie Nation, Stootie, Hart and 2 people liked
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