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Heavy unknown deficiency?

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Rgrctea
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Terpinolene
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Mephisto Creme de la chem week 4 of flower

gh trio (per gallon) 1 tsp micro - 1/2 tsp grow - 1 tsp bloom - 1/2 tsp calmag - 1/2 tsp hydroguard

ph meter is calibrated and ph rises but I don’t let it get over 6.2

has not started touching buds yet but it’s very close. 

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Macky
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(@macky)
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Welcome to Percys RG, Is there a problem with your plant? Get a picture up and we can take a look Smile

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Rgrctea
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My bad, thought I had attached my photos but it must have not worked. Here it is. I’m also going to include a picture of my plant from March 19th around a week ago. Whatever was wrong with it progressed very rapidly

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Rgrctea
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Macky
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Great pictures mate, they really gonna help diagnose! Sure signs of a salt build up in my opinion. Crispy leaves, like if you touch them they are brittle and will crumble too?

Whats the EC of your reservoir mate, and pH? And what are you feed her?

A big flush i think would do her well, and a feed at a lower EC. But should really know what EC you have first and what food you're using Smile

We can get it back on track though mate, dont panic

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Rgrctea
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This is my first time attempting dwc. Solo 5 gallon bucket. Reverse Osmosis water, General hydroponics trio, calmag, hydroguard at the ratios on the first part of my post. Leaves are so crispy, if bent or touched they do crumble. I just checked and the ppm is 690

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Macky
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ppm to EC conversion chart
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See, I wouldn't say that was too high, especially for DWC, so It is probably too much calcium mate. Id dial back on that. got for 1/4 tea spoon instead, and see how she feels in a couple of days. 

So change the res, and mix up a new feed with a little less cal mag in it Smile That should help 

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Rgrctea
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Okay I will try that out. I appreciate the fast responses!

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Macky
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@rgrctea Any trouble at al come back and ask for help mate Smile

Any other issues at all let us know about straight away too. 

 

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dok.gonzo
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@rgrctea dont worry too much about that brother. definatly correct it, but its not end game for you. later on in flower you can get some crispy leaves. i get a few on every plant. more on others too. lol you seem to have a lot and id guess youre probably 4 or 5 weeks into flower. kinda early for all that

 

also i basicaly run everyhting at around 1000-1200 EC. id also suggest stearing away from "ppm". the problem with ppm is its not standardized.

various pens measure ppm based on their own calculations. they calculate by multiplying the EC value by a certain  amount to roughlly gauge PPM in certain solutions (some use potassium nitrate for example) which is great if youre measuring a pure solution but in hydro we mix a lot of salts.

id suggest loweing ppm to maybe just 600 or evcen 550. because in DWC the roots are always so much more exposed to their nutes you want to run lower than any other medium. soil can have EC pushing 5000 and still show no burns on plants. coco can push 2000 EC fairly often too. bigger plants can handle more too

 

what pen are you usaing for ppms?

 

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Rgrctea
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@dok-gonzo HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy removed link

Edit: amazon link got removed

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Macky
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Yer that one isn't great mate. When doing DWC you really want a good one because you need to be accurate with the numbers.

Are you able to get an Essentials EC meter? 

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JenK
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Curious what’s your water temperature 

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Rgrctea
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Just went down to check. Air temp is 70 and the water temp is 69

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JenK
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@rgrctea try lowering it to 66 I run mine at 65 from start to end

 

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monkeydo
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I’m going to have to second Macky on the HM Digital meters. They have given me so much grief the low price looks nice but will really cost you eventually imo. All of my HM products have hit the bin long ago. 

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Rgrctea
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@monkeydo you have any recommendations on which one to get and do you think it is necessary for me to get it right now?

 

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monkeydo
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@rgrctea as luck might have it Macky just did an article on EC meters. You can find it HERE What brand ph meter are you using? As you know, ec and ph work hand in hand and problems in either can cause deficiencies.

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Rgrctea
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@monkeydo Apera Instruments PH20 is the ph meter I got

 

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monkeydo
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@rgrctea I’m using the apera as well and if calibrated it’s good!

 

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dok.gonzo
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i totaly forgot to mention i think its actually your PH

 

too many dabs in the morning i start yapping about EC lol

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Rgrctea
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@dok-gonzor ph has been rising up slowly. I’ve been adjusting it back down when I top off every 2 days or so. Been trying to not let it get over 6.2 but it has been up to 6.5 a few times

 

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Rgrctea
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Plant has gotten worse since lowering nutrient levels so I don’t think it was over feeding that was happening. I’m about to just toss this and give up

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Macky
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@rgrctea Damn!! She got much worse wtf man. And all the other plants are looking fine? 

Did you look into getting an EC meter mate, it would be good to know whats going on in the res. 

When you reduce the feed, the slats can be pulled out of the plant to try and find balance between the medium and the plant itself. MAybe this has what has happened here. 

It would be so much easier to know what's going on if you had an EC meter mate. 

@Jenk Suggested the root temps ight be an issue. How are the roots looking? 

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Rgrctea
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@macky the other plant is the same strain in another solo dwc bucket. That plant is also messed up. Looks like it hasn't done anything in like two weeks. I will take a pic of the roots right now

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