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Offlinebittnerkd
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Registered: 11/26/17
Posts: 12
Last seen: 1 day, 9 hours
Brown spots yellowish edges tips hydro
    #829948 - 11/26/17 03:54 PM (21 days, 17 hours ago)

I have a rwdc setup
I started from seeds had 12 seeds 9 sprouted and I chose the best 6
I’m using 7 5 gallon buckets one for reservoir with a 300gph sumb pump
I have about 20 gallons in my system I’m using advanced nuts and hydroguard I put in what it says on the bottle my plants have been in the system for abou 4 weeks but are about 7 weeks old
2 300w led lights



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OfflineRider420
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Registered: 06/21/17
Posts: 85
Last seen: 3 days, 12 hours
Re: Brown spots yellowish edges tips hydro [Re: bittnerkd]
    #829950 - 11/26/17 04:27 PM (21 days, 17 hours ago)

Your PH seems a little low at 5.8 and your plants would do better if your lights were closer to them say 10 inches or so. How often do you change the reservoir? My best guess is the plants are being over fertilized I would try flushing the plants with half the amount of fertilizer then going to two thirds of what you have been using.

BTW those plants look very healthy other then the burns. Best of luck.


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Offlinebittnerkd
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Registered: 11/26/17
Posts: 12
Last seen: 1 day, 9 hours
Re: Brown spots yellowish edges tips hydro [Re: Rider420]
    #829954 - 11/26/17 05:50 PM (21 days, 15 hours ago)

Here’s the deal I was doing it every 6 days but then this started happening and I was thinking because no cal mag so 3 days after a water change I went and bought cal mag and did another water change and added it in plus my hydro guard and advanced nuts grow and micro blends that was only yesterday. What do you  recommend, and thank you I put a lot of work into this I’m still currently waiting to tell what the sexes are though which is stressing me!  I literally just raised the lights when this stuff started happening the other day I’ve been cutting bad leaves off like crazy it has definitely slowed down the bad leaves since I added cal mag though


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Offlinefunky
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Registered: 10/13/14
Posts: 185
Last seen: 15 days, 18 hours
Re: Brown spots yellowish edges tips hydro [Re: Rider420]
    #829955 - 11/26/17 05:57 PM (21 days, 15 hours ago)

You have some twisted new growth so I'll second the pH being a bit low. You may be a little hot on nutrients but the color looks nice and green lower leaves seem OK, so I think it's pH related.

Since you just did a change I would let them ride and see what happens it may have been the lack of cal/mag. But twisted growth is usually pH related.


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OfflineBig Bear
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Registered: 02/16/15
Posts: 280
Loc: In Love, On Time Flag
Last seen: 12 days, 41 minutes
Re: Brown spots yellowish edges tips hydro [Re: bittnerkd]
    #829971 - 11/27/17 11:13 AM (20 days, 22 hours ago)

Phosphorus burn.  Mineral deficiencies are often a side effect of P burn.  Dial back the nutrients.

The brown/yellow tips are the first signs.  The situation will likely get worse and the leaves will get worse, even if you remedy the situation.


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Cannabis, Marijuana, Ganja & Greens >> Cannabis Cultivation

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