DWC - Brown spots on leaves and roots??

I started these gals and 3 weeks ago (4 from seed) and can't seem to pin down this issue. Brown spots on the leaves and now discoloration of the roots. They seem to be growing pretty quick regardless of the issues. Any insight would be much appreciated.
Reservoir is changed every 7 days with a new, clean bucket.
ppm = ~220,
pH = 5.7-6.0,
Water temp = 70-75°F
Water level = 2 in below net pot
Tent temp = 75-80°F
Humidity = ~50% rh
Nutes: AN Sensi Coco Grow A&B @ 25% strength
Lighting: Phlizon 1000w @ 24 in


Thanks in advance!

raise the water level up higher and feed them. 200 is just above phd well water.. bring it up to 300-400
.

just my opinion, but i always had better luck with b.c or gh food on the veg side over advanced. on the flower side i choose advanced.

oldtymemusic said:

raise the water level up higher and feed them. 200 is just above phd well water.. bring it up to 300-400
.

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oldtymemusic said:

just my opinion, but i always had better luck with b.c or gh food on the veg side over advanced. on the flower side i choose advanced.

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I just use filtered water so I was afraid of my poms being too high and was pretty surprised it was so low. And I actually just bought some GH. My pH is different each day so I'm thinking the "pH perfect" AN is messing with my reservoir. And advise on the browning roots? Can low ppm have that affect. I thought my water temps may be a little high and might have some kinda root rot. I thought for sure that the black bucket, top, and cover over my clay pebbles would keep it dark enough to avoid that...

75 is borderline then i use a lil hydrogaurd. but it isnt high. i have gotten those type of roots and assumed it was the time i let my water get too low. could be wrong . i like the water just below the cup, after they get rooted good.

Calcium deficiency? If you're not running a recirculating system then definitely run either bennies or sterile

mpence said:

Calcium deficiency? If you're not running a recirculating system then definitely run either bennies or sterile

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Thanks! I just bought Hydroguard and cal-mag. Hopefully it helps!

oldtymemusic said:

75 is borderline then i use a lil hydrogaurd. but it isnt high. i have gotten those type of roots and assumed it was the time i let my water get too low. could be wrong . i like the water just below the cup, after they get rooted good.

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mpence said:

Calcium deficiency? If you're not running a recirculating system then definitely run either bennies or sterile

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Just wanted to say thanks again for the advice! The gals took off like crazy and are looking healthy as can be! This is a before and after just in 1 week's time:

Lower your res temp a bit 66°-72° and run it sterile, .1ml bleach/gallon, lots of home growers think bennies is the way to go, but thats imo only if your environment is sterile, at home you got pet hair, dander and all sorts of shit that can contaminate your res and won't be killed by hydroguard or whatever beneficial bacteria you'd use otherwise.

GyppedGypsy said:

I started these gals and 3 weeks ago (4 from seed) and can't seem to pin down this issue. Brown spots on the leaves and now discoloration of the roots. They seem to be growing pretty quick regardless of the issues. Any insight would be much appreciated.
Reservoir is changed every 7 days with a new, clean bucket.
ppm = ~220,
pH = 5.7-6.0,
Water temp = 70-75°F
Water level = 2 in below net pot
Tent temp = 75-80°F
Humidity = ~50% rh
Nutes: AN Sensi Coco Grow A&B @ 25% strength
Lighting: Phlizon 1000w @ 24 in
View attachment 4884455View attachment 4884452View attachment 4884454View attachment 4884451

Thanks in advance!

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Ive grown DWC allot and to me your roots seem fine, maybe a bit of nutrient stain but thats normal. You have some sort of deficiency,possibly calcium. Are you using RO water or tap? and are you supplementing calmag

I've had leave look exactly like that at the begining in a couple of my last grows. Was eventually solved by adding bennies, cal-mag and removing everything else apart from A + B.

I've been running bennies the last few grows (Greatwhite and Mammoth P) and I will be always from now on.

There is always going to be a microbiome living in the roots so may as well try and make it a beneficial one. When I change my res I'll usually leave a tiny bit of the water in there to save some of the biome.

Just chopped last week and cleaned the res... looked at the res and smelled the water (which a little would have been there for ~9 weeks) and it smelled like fresh soil, no rot or anything like that because the bennies help keep the res clean by eating the dead plant material in the res.