The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Cal-Mag with organic soil?
generosityjoe
started grow question 5y ago
Hello everyone! When using organic soil amendments, does everyone still use Cal-Mag? And if so, at what age of the plant do you start, and how often? Thanks
Open
Week 1
Feeding. Schedule
likes
Answer
RickSanchez
answered grow question 5y ago
I had to use it after 11 weeks of veg. in 20l pots - worked well for me 🙂
1 like
Complain
Roberts
answered grow question 5y ago
You should not need to use it, but it is a good supplement to have. Every plant is different.
2 likes
Complain
Similar Grow Questions
Solved
local____host
Flush too early?
10th week / Autoflower / Outdoor / Soil / 3Gallons Fabric Pots / Advanced Nutrients Sensi Bloom / 6 hours sun per day. https://imgur.com/a/vm4qrEH Flushed the soil yesterday, but is it too early? Looked at trichomes but cannot tell if transp. or cloudy? Trich. pic. is Black Lemon
Buds. Not fattening
Feeding. Schedule
Feeding. Other
5y ago
2
Solved
HAPPY91
Help How Often To Use Liquid Squid
Should I use Coast Of Maine Liquid Squid Fertilizer 2-3-0 for every watering?
Week 3
Feeding. Schedule
6y ago
1
1
Solved
SurlyMahn
Fox Farm Soil Feeding Schedule
I have a question about the FoxFarm Soil Feeding Schedule. I have the three-part system: Big Bloom, Grow Big, & Tiger Bloom. But the feeding schedule lists a bunch of othe products as well are those supposed to be used in conjunction with the basic system or separately?
Week 3
Feeding. Schedule
5y ago
3
3
Solved
ChuckyK
When should I feed for first time?
First grow. I am growing in promix ultimate organic mixed with vermiculite and worm castings. When should I add nutes, even at the most minute dose, for the first time? I’ll be using dr.earth starter fert 2-4-2 alternating with a 2-2-2 liquid feed for start of true veg.
Week 1
Feeding. Schedule
6y ago
2
2
Solved
NoSoSadPlant21
FF Ocean forest nute schedule with FF trio on Auto
Just started FF Big Bloom at 1/4th strength in FF Ocean Forest at about fourth week. Also just noticed first pistil growing on one of the plants. When should I swap to Tiger Bloom as I have heard Ocean Forest is hot and do I maintain 1/4th strength for auto flowers? Thanks
Week 4
Feeding. Schedule
4y ago
2
2
Solved
laberg
Water and nutrients
I water every other day. So far I have been using nutrients to bring my water up to the proper EC (ppm). It is always a VERY small amount (1/2 tsp). I haven't noticed any signs of toxicity but I wanted to hear your opinion of my approach and changes that I could/should make
Week 5
Other. General questions
Feeding. Schedule
Feeding. Other
3y ago
5
5
Solved
Odin9
Please give me a complete'ich feeding schedule on autoflower in light mix soil pet perlite
Hi biobizz growers can someone had been a angel and give me som advise on feeding schedule autoflower 12l airpot ✌️??I wondering 🤔feks week 8 feeding schedule do you use nutrients in one watering or split the nutes up? I water feks 2-3times a week. How often do you add biobizz🤔
Feeding. Schedule
4y ago
3
3
Solved
Dudders
Watering before harvest
Think I'm in the last two weeks before harvest. Growing in guanokalong complete mix. And haven't needed to water for 3 or 4 days now. Is this normal? Thanks in advance
Feeding. Schedule
4y ago
2
2
Solved
Beccabud
Nitrogen toxicity? Clawing
I'm in the flowering stage with either (tropicana banana or amnesia Haze). I don't know as I germinated both and only one grew and lost the labels.. Anyway, I'm In Flower stage and think its got nitrogen toxicity. Leaves are clawing. Is it going to be okay?
Leaves. Curl down
Feeding. Schedule
4y ago
2
3
Solved
BoofMan420
When to feed plants?!
When should I introduce cal-mag and nutrients to my plants? On sprout or 1 week after plant? I have been watering top layer of coco every 3-4 hours since plant with 6.1ph balanced water. What would you be doing differently?
Feeding. Schedule
5y ago
2
2
Solved
Nzmk902
Pic wont upload!!... but the buds r sprouting.. n pot feels super light compared to the rest... plant has healthy appretite?? Any help is good
I have an almost 8 week old auto flower/2.5 weeks into flower. Lots of bud sites. I give her 3L once a week or every 6 days... does that sound like too much? Too little? More frequent? I kno certain seeds r healthier. Thirstier. Strains r diff.. but general guidelines or compare
Buds. Other
Feeding. Schedule
Feeding. Other
5y ago
2
3
Solved
DevilsBud
Watering with nutrients
Question about watering soil Every 24 hours i give my plants water dep how big they are and how moist the soil is . My water has pH6.5 and i put required Advanced nutrients in it . But is maybe wise to not always give the plants water with nutrition in it . plant are looking fine
Feeding. Schedule
Feeding. Other
5y ago
4
5
Solved
EhJay
Nutriens
I guess my first question as a first-timer would be when is the ideal time to start adding nutrients. I have already purchased several products in advance such as bat guano, humic/fulvic acid, cane molasses, and marine phytoplankton.
Week 1
Feeding. Schedule
6y ago
5
5
Solved
Horsefunkle
Coco Coir Seedling Questions
Hello I would like to know if it's possible to over compact coco coir as I kept pushing it down when I filled pots and if it's the reason one of my seedlings cotyledon leaves are droopy. When do I first add nutrients to the water? Germinated and potted 2 days ago sprayed 3 times.
Other. General questions
Setup. Substrates
Feeding. Schedule
4y ago
3
Solved
dkoded
Watering: How much?
I am still trying to learn and understand how watering is done optimally. I weighed my pots before watering. Is there a way to determine how much water is too much? I used 1.5lt per pot for the first watering, and I am monitoring to see if it is too little (based on drying).
Feeding. Schedule
3y ago
4
2
Solved
BloSheGrowz
Soil and nutrients
I will be growing purplematic auto fem, Swiss dream auto fem & Swiss dream rose auto fem i would like to make my own soil what is best to use to start seed and whats best to use from trans thru harvest also what nutrients should I use Thanks in advance
Other. General questions
Setup. Seedling
Feeding. Schedule
5y ago
1
1
Solved
DonCostro
How to decide when to start flushing
Do I look for specific signs? Or just go with the breeder's info sheet (7-8 weeks flowering), I'm thinking to keep feeding for 1 week more, from what I can tell, trichomes are still mostly clear, and about half of pistils brown.
Week 8
Feeding. Schedule
4y ago
2
2
Solved
Andy1964
What week should I start adding veg nutrients my Bruce banner auto
At what stage should I start adding nutrients ? I'm on week 3 of veg stage thanks
Week 3
Feeding. Schedule
3y ago
2
3
Solved
bruxup
Good Nutrient Mixture For GH Flora
My outdoors are transitioning and I got GH Flora Series (Micro, Gro, Bloom). I mixed 2.5ml of each into 1 gallon of water (4 L) and spread that across my 4 plants. I feel like this was too little? What is a good general mixture for 1 plant, or is it better to make a bigger batch?
Feeding. Schedule
Feeding. Chemical composition
Feeding. Other
5y ago
5
5
Solved
Lumberdog
When to start nutrients with Fox Farms soil?
I’m using fox farms soil. I have Humboldt Nutrients ‘Grow’ and ‘Bloom’ liquid to add when the time is right. Considering the value of the soil in the first place, when should I start the nutes and at what strength per gallon of water? Been trying to research- nothing is clear.
Week 3
Feeding. Schedule
5y ago
3
3