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Description
marshall herbicide Field Marshall Critical MassField Marshall Critical Mass is a high powered PK additive designed to supercharge mid to late flowering performance. Perfect for use in hydroponic, coco, and soil systems, it delivers the optimal balance of phosphorus (P) and potassium (K) your plants crave for dense, high quality yields. What It Does Critical Mass fuels plants through their most demanding flowering stage by boosting sugar production, energy transfer, and nutrient movement all
Field Marshall Critical Mass is a high-powered PK additive designed to supercharge mid to late flowering performance. Perfect for use in hydroponic, coco, and soil systems, it delivers the optimal balance of phosphorus (P) and potassium (K) your plants crave for dense, high-quality yields.
What It Does
Critical Mass fuels plants through their most demanding flowering stage by boosting sugar production, energy transfer, and nutrient movement — all essential for developing big, aromatic blooms and heavy fruit set.
- Phosphorus (P): Supports photosynthesis, cell division, energy transfer, and genetic stability. It’s the backbone of how plants convert light into usable energy.
- Potassium (K): Drives sugar and starch production, enhances disease resistance, and strengthens flower density for weightier, more resinous yields.
As your plants mature, potassium needs increase while phosphorus demand stabilises. Critical Mass delivers the perfect ratio to match this natural progression, ensuring optimal flower development and crop quality.
How to Use
Soil & Pot Mixes
- Use from week 4 (day 22) of flowering until maturity.
- Dilute at 0.5ml – 1.0ml per litre of nutrient solution.
- For heavy fruit ripening before flush: increase to 1.5ml/L.
Coco & Hydro Systems
- Follow the same schedule at, or up to, double strength for high-demand crops.
- Maximum dosage: 2ml/L mid-flower or 3ml/L ripening.
- Reduce base nutrients by at least 20% to avoid burn when using double strength.
For a clean, flavour-packed finish, flush with FM Clean Cut and water for 3–7 days before harvest.
Key Benefits
- Enhances flower size, density, and sugar content
- Improves nutrient uptake and energy transfer
- Boosts disease and mould resistance
- Optimised P:K ratio for late bloom performance
- Compatible with all growing media and systems
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4.3 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 4
Easy Read With a Wild Ending
Format: Audiobook
This was a really easy book to get pulled into. The writing flowed well and I flew through it without feeling bogged down at any point. While I don’t think it hit me as hard as some of Keri Lake’s other books, I was still invested the whole time and needed to know where everything was going.
The atmosphere and mystery kept me hooked, but the ending? That twist completely caught me off guard. I honestly did not see that coming at all. Even though this one wasn’t my favorite from the author, the final turn alone made it worth the read.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
A masterfully written, stunning, gothic romance!
Format: Kindle
Lucian Blackthorne . . . my, my, my. Be still my romantic, sinful, dark heart. This male lead is one of the most addicting, flawed, sensual, erotic characters I've ever read. fanning myself I loved his dark, thrill-seeking, possessive, obsessive, carnal nature. Seriously, where can I find one?
I digress. Lucian is a scarred man with secrets but that's only the tip of the proverbial iceberg. He's layered as deeply as an onion and it's addicting to peel back each one. He's a rich, powerful alpha male but there's so much to the man the town refers to as the Devil of Bonesalt. He's marked by loss, lies, a painful past, and the shadows of his choices in life. The Blackthorne name bears tragedy, turmoil, and an affiliation with the macabre.
Isadora is a strong female lead. She's young but her life hasn't been easy. She's flawed, haunted by the past, and as much an outcast as her new employer, the enigmatic, elusive Lucian Blackthorne. Her new position brings her into the fold, learning the darkness, deceit, sadness, and crimes elicited against the Blackthorne family. It only takes one night, one passionate encounter with the master of salt and bones to change her life forever.
Scandal, intrigue, tortured hero, suspense, thrills, mind-blowing twists, jaw-dropping secrets, and enough sensual bedroom scenes to set your kindle on fire.
This is a MUST READ. One of the best reads of 2022 for me. LOVED it!!
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Reviewed in the United States on October 9, 2022
★★★★★ 3
Solid 3.5 for me.
Format: Kindle
The story in the characters were unique which I liked. Never read a story like it. Kept me interested. It just wasn't as captivating as I hoped.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
🖤🖤4 Stars🖤🖤
Format: Kindle
“There are darknesses in life and there are lights. You are one of the lights...The light of all lights.” - Master of Salt & Bones.
REVIEW: This book follows Isa who lives with her aunt on an island. Isa begins a new job as a caretaker for the dark, and mysterious Blackthorne family. A family who is disliked and even feared by the rest of the inhabitants of the island. However, as she grows closer to the man who they call the devil, Lucian Blackthorne, Isa sees for herself what the truth of Blackthorne manor really is.
This book is a dark romance! Originally I was told it was fantasy, which I don’t agree with at all. It is more of an erotic, gothic feel with some mystery sprinkled in. The plot was very interesting and kept me intrigued. This book was also quite steamy, however, I felt those scenes were well done and didn’t take away from the rest of the book.
Overall, the content in this book is quite dark and the backstories of the characters involve potentially triggering matters. Be aware to look these up if you feel like you need to. Overall, this is the first book I have read by Keri Lake, and I am excited to read more.
SYNOPSIS: When I was a little girl, I dreamed a handsome knight would come and rescue me from my wretched mother. He'd ride up on his white steed and break the curse I've been fated to carry since the day I was born.
Funny how things changed over time. How the fairy tale twisted into something far more crooked, darker than I ever imagined.
In reality, my knight is scarred and broken, living alone in a castle of bones that overlooks the sea. He isn’t searching for me. He never was.
Lucian Blackthorne is as cursed as I am, and equally shunned by the locals, the fishers of men, who believe him to be the devil in the flesh. Perhaps he is, with the way his amber eyes draw me in, ignite me like an infernal blaze. And the sins he whispers in my ear are as wickedly intoxicating as the man himself.
Yet, his touch is heaven and his will is my weakness. He calls us forbidden, an unsalvageable tragedy, with no happy end. Maybe we are. But in this story, he’s the one who needs saving.
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Reviewed in the United States on August 11, 2020
★★★★★ 5
one of my top reads of 2023 🖤
Format: Paperback, Format: Paperback
Master of Salt & Bones by Keri Lake review (no spoilers)
♾️/5 ⭐️
4/5🌶️
🏰gothic dark romance
🎹murder/mysteries
🏰age gap
🎹spicy
🏰touch her & d!e
🎹secret society
🏰dual POV & a past timeline for Lucian
“we’re the composers, the conductor’s of our own fate, and we write the notes to a beautiful, dark melody that no one else can hear.”
this book was AMAZING ❤️🔥
i couldn’t put this book down for anything .
this book gives beauty & the beast / phantom of the opera vibes with a lot more going on . Lucian hires Isadora to help take care of his mom, not his nurse but a companion for her . Isadora has a painful past & she’s willing to do anything to get out of town to make some money , even if that means working for a guy with a thousand bad rumors about him . the way Lucian talks to Isadora is like he’s speaking poetry without even trying . the wording & quotes in this book were chiefs kiss . the spice in this book was gold 🔥 the plot of this book is super original & sooooo twisty . i think there were 5 different twists at the end & i had my jaw on the floor at all of them .
literally obsessed with this book . the writing was beautifully done 🫶🏼
this is my first book by Keri & i will now be ordering more from her immediately🖤
this book is definitely in my top reads of the year!
as always check your TW 🤍
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Reviewed in the United States on September 29, 2023