Vote Now 🏆 for the Grow Awards 2025!
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy
Accept
Brown/yellowy Spots and Stripes
THC123started grow question 5 years ago
Alright, last night I did a reservoir change. I added a fraction more nutrients to the water (.25ml per gallon). I also topped the plants. This morning I woke up and there were these brown/yellow spots and stripes on the leaves. Any idea what it’s from?
Thanks!
like
MadeInGermanyanswered grow question 5 years ago
Hi buddy go down with the ph to 5.5 - 5.8 at hydro :-) and the ec can slowly go up to 1.2 :-)
THC123answered grow question 5 years ago
MadeInGermany
Is that the issue though? Because the PH has stayed at 6 the whole grow and it just happened after this reservoir change.
like
Complain
THC123answered grow question 5 years ago
Also to note, I PH’d the water to 5.5 before putting it in. Then in the evening I went to check the PH and it was at 6.4. I added a bit of PH Down to the reservoir (rookie move. But after all, I am a rookie and still learning) and now it’s at 6. PPM is at 450.
like
Complain
Similar Grow Questions
Solved
BrianMcGee
Yellowing of lower leaves and crispyCheese auto soil airpot 9L (barneys) 18/6, 14inch light distance (100% power). RT 21/28C, RH 40/60%. Been feeding when top inch is dry which is 500ml every 2/3 days. Using canna every thing at 1/4 doses and 6.1ph. Have added bloom with 5% nitrogen, thought it may be deficient.Leaves. Color - Yellow
a year ago
2
7
Solved
Vril_Ya
Nutrient burn?Jealousy(F) plant into second week of flowering. Are these leaves showing signs of nutrient burn? Or is it some sort of deficiency?Leaves. Color - Yellow
a year ago
3
3
Solved
VLG_Cannabis
Anyone know this yellowing?Hello everyone, I’ve got 2 autos going from 420FastBuds and im starting to see some yellowing in the leaves. I didn’t PH till I saw their first set of leaves and I was using bottled water but now I have my water dechlorinated and ph set to 6.4 for every watering.Leaves. Color - Yellow
a year ago
2
Solved
ObserverInterest
Is this nute or sun burn? What should I do to save my babies ?I upped the nutrients to week 2 of veg state (biobizz) and put the light to 50% intensity. I put the light at 6 inches above recommended height (which is recommended on the Mars Hydro website for beginners). . IS THIS NUTE BURN OR LIGHT BURN?a year ago
7
4
Solved
Mokorelsare1
Deficiency or toxicity?Hello i'm not sure what's going on, is this toxicity or deficiency? She loojs happy overall but new leaves have weird color, curled down tips, some of em are yellow and some are brow - burned.. maybe it's because she's transforming into bloom phase, PH 6.2 but runoff is PH 7.1.a year ago
5
2
Solved
OldStonedScottishGuy
Leaf Curling and yellowing on three week old plant, how to stop this gettign worse?I am getting leaf curling and yellowing on my 3-week-old Hulkberry plant. I suspect nutrient burn, even though I am using what was recommended by my local grow shop and also RQS's website. I have reverted to water only and raised the light higher. Anything else?a year ago
4
4
Solved
GrowP4Y
What's the problem?Hi guys, basically for the last few days the problem hasn't varied too much but I can't figure out if it's my light or if it's coming from somewhere else. Some of my leaves are curling with stains either on the leaf or like a burn on the tips.Leaves. Twisted
Leaves. Color - Yellow
a year ago
6
7
Solved
Darth_Cannabis
Critical Purple: Leaves slightly yellow.Just started my first grow. I1 placed the light high in the tent and the leaves slightly turned yellow. I lowered it yesterday to 18” over the top on the plants. Just wondering if I am on the right track to solve the issue. The plants are still growing. Minimal nutrients 1ml/gal.Week 1
Leaves. Color - Yellow
a year ago
9
6
Solved
seEdcork
Help! What is this?! Upper leaves turning yellow/brown but not the lower ones. Light burn?Leaves. Edges burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
a year ago
1
1
Solved
BLAZED
Older leaves are yellowing, brown/red rusty spots, dying tissue, red stems.Older leaves have brown/red rusty spots and looks like dying tissue in between the veins.
Burnt tips, and yellowing leaves.
The soil was really dry and my PH meter was 0.4 too high.
I gave each plant 3L of water with EC: 0.0 PH: 6.4 to check runoff.
Runoff was PH: 6.1 EC: 0.8a year ago
3
3
Solved
StarfishSmallBatch
Magnesium Deficiency?Is this plant suffering from Magnesium deficiency? I noticed some of the growth is yellowing and the leaves are curling upwards at the tips. The tips of the leaves is where most of the discoloration is as well.Leaves. Curl up
Leaves. Color - Yellow
a year ago
1
Solved
zaMaurice
Moin, bei meiner Größen Pflanze fangen die Blätter an von außen gelb zu werden und braune Punkte zu bekommen. Ist das ein Zeichen von einer überdüngerung? Alle anderen Pflanzen haben dies nicht. Oder zu wenig?Leaves. Color - Yellow
Leaves. Color - Dark-brown
a year ago
2
2
Solved
CornerBud
Is my plant showing signs of Nitrogen deficiency?Autoflower, day 40. Most leaves are in a yellowish-green tone or even completely yellow. I was mistakenly watering it with tap water, but when I noticed the yellowing, 1 week ago, I started watering with mineral water at pH 6.49.Week 6
Leaves. Color - Yellow
a year ago
4
4
Solved
InOverMyHead
Help with unhappy plantStarted developing yellow/brown spots last week. Watering approx 2L every 3 days. Soil is HF/OF/perlite mix. Gave first feeding of FF Trio at 1/3 strength 2 days ago but she's continuing to look worse. More spots, lack of color and droopy leaves.Week 5
Leaves. Color - Yellow
a year ago
6
6
Solved
CJ140
Light colored sugar leavesI'm at the end of week 6 and the plant is looking healthy overall but there are some bud sites that have some sugar leaves that are developing with a lime green color. Im thinking I might have been a little high on the ec so I backed off a couple days ago. Thoughts?Leaves. Color - Yellow
a year ago
3
3