The Grow Awards 2025 🏆 
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Thoughts on using organic kelp meal on week 5 into...
CannaScuzzyBstarted grow question 5 years ago
Thoughts on using organic kelp meal on week 5 into flowering with 4 weeks left to go. Noticing calcium/magnesium deficiency (little rust spots on some leaves forming, yellow dead curly leaves on bottom)...4 weeks left I feel is a little late to be doing this are my thoughts😕
likes
CRiSPrGrowanswered grow question 5 years ago
it's not too late the plant will have enough time to recover in the two weeks you'll be feeding cal mag , just give it plenty of time at the flush and dont start the flush too early. hope this helps ! 🚀
Similar Grow Questions
Solved
Jhort
Is this lockout or some sort of deficiency? Soilless medium- using biothrive, biogrow, and cal-mag. Autoflower Lemond auto
Prior to yellowing the plant looked very droopy for 2 wks.
Roots look greatLeaves. Curl down
Leaves. Color - Yellow
Feeding. Deficiences
5 years ago
1
2
Solved
TripleCcannabis
Boron deficiency?Is this a boron deficiency?Week 4
Feeding. Deficiences
5 years ago
1
4
Solved
Liam_2020
Soil PH Issues!Started seeing some deficiencies in my plants mainly burnt tips and edges and yellowing...thought nute burn BUT after checking my soil run off the pH was 5.3!
Tap water is 6.8 but what I didn’t realise was after adding nutes it was 5.5! Am I best now flushing with 6.8 tap water?Feeding. Deficiences
5 years ago
1
3
Solved
HazeBee
Browning of leavesGot brown spots, on one of my plants. It was very green and happy but the bottom leaves are spreading to the nodes leaves. I think I should give some Nitrogen as I haven't yet? Or calcium? Can anyone help?Leaves. Tips - Die
Leaves. Color - Pale
Feeding. Deficiences
5 years ago
2
Solved
MrGreen92
Growth looks like it's stopped, is it time to flush?2 of my plants look like they've stopped growing now and the calcium deficiency looks worse and worse.. should I just flush then with water for a couple of week and be done with them?
The late bloomer looks like it's got ages still, definitely not what I'd hoped for being autos5 years ago
1
1
Solved
soflo
Y’all WTF did I doThey burnt so I found out I gave too much nutrients. Now I have only water cause my soil has nutrient but this shit fucked up. Do I need some iron or something? What do I add to my water that won’t cause over nutrients burn too 😭 my outside plants are doing amazing without anythLeaves. Edges burnt
Leaves. Tips - Die
Feeding. Deficiences
5 years ago
3
Solved
thenewdude
please take a look and let me know if I can do anything to fix what is happening. thanks!!please look at my latest week 4 pictures and tell me if you think 2 of my younglings will die or bounce back. I had to leave 5 days. rh shot down and temps shot up ( ac failed me and humidifier ran dry 2 days before I got home I think)
found them fully dry and curled5 years ago
2
2
Solved
Ionic20
Advice please :)This is 24 hours later. Should I just give some calmag now even tho the soil is still damp?Leaves. Color - Yellow
Leaves. Color - Dark-brown
Feeding. Deficiences
5 years ago
3
3
Solved
urbanbud
dark discolouration developing in flowering wk 3howdy growbuds, noticing the pictured discolouration. hope someone w more experience/knowledge might recognise what's happening to my gals before it develops. advice/opinions welcome on if maybe nut burn/def, temp or ??? a heap more detail in entries to help diagnose. cheerz 🙏5 years ago
2
4
Solved
Minty
Looking for clarification on the Flush time required for a RDWC grow? I have read this can be as little as 2 days of just plain water but should this also include CalMag if I am RO water? I assume the standard root rot treatment continues? i.e. OxyPlus, HydroGuard, Phytoff?Thanks5 years ago
1
2
Solved
Fruitgrower
Drainage issueI'm not quite sure why this cup doesn't absorb its waterings when the other two solo cups are getting Watered every day. All 3 cups have no drainage. They are all grown in the same conditions.
My first instinct is lack of drainage, do I need to make some holes, bottom or side?Week 5
Feeding. Deficiences
5 years ago
3
6
Solved
Quintus
Is this a deficiency or some form of toxicity (autoflo/cfl 125w/ led 300w)Hello guys i'm a new grower, I have 2 plants one Purple Queen Auto and one Northern Lights Auto.
On the lowest 2 leaves of the purple queen there is this thing (picture)
It is only there on one plant only and they have the same water each time (1L)
Do anyone know what i'm facingLeaves. Tips - Burnt
Leaves. Color - Yellow
Feeding. Deficiences
5 years ago
1
1
Solved
RustyStarbuck72
First Grow Auto Critical xxl look OK?Hi all, I'm am just after a bit of newbie reassurance really, these are my 3 BCN Critical xxl ladies.. I over watered a bit and they became droopy and yellow.. I am using remo Nutrients.. I think they have recovered. Do they look OK? Week 4. I gave them a little xtra calmagPlant. Other
Feeding. Deficiences
5 years ago
2
2
