King Crab® Liquid Bacteria
King Crab® Liquid Bacteria
≈ 757 reservoir feeds at 5 mL / 10 gal — about
42¢36¢ per feed
- Free shipping over $60$70Ships next business day · U.S. orders
- Made in USALab tested · family owned since 1999
- Safe for people, planet & petsEvery species on the label
Adds life to the root zone.
King Crab® is straight bacteria, cranked: eleven strains at 25 million CFU per mL, each one picked for a single purpose — freeing up phosphorus and micronutrients, the inputs that decide yield and flower quality.
It's not a replacement for your feed. It's the supplement that makes the feed hit: run it weekly alongside any fertilizer line, through veg and bloom, at half a mL per gallon. That's the whole protocol.
What's in every bottle — 11 bacterial strains
What's in every bottle — 11 bacterial strains
Contains non-plant-food ingredients — soil amending guaranteed analysis.
Beneficial bacteria (each at 25,000,000 CFU per mL): Bacillus subtilis · Bacillus licheniformis · Bacillus amyloliquefaciens · Bacillus megaterium · Bacillus pumilus · Bacillus coagulans · Bacillus azotoformans · Paenibacillus polymyxa · Paenibacillus durum · Pseudomonas fluorescens · Pseudomonas aureofaciens
99% total other ingredients (inert as a non-plant food ingredient).
Every strain and count, printed on the label.
How to run it
How to run it
Works on seeds, clones, coco, soil, and any hydro system.
- Soil / existing plants: mix 1/2 mL per 1 gal of water and saturate the rootball. By hand, through fertigation, or out the drip lines.
- Hydro: 1/2 mL per 1 gal of water. Runs with any fertilizer line.
Going heavier than label rate is fine — never exceed 5×. Shake well before use. Weekly for best results.
Compare sizes
One formula, three sizes.
The same guaranteed analysis in every mL. A feed is one 10-gallon reservoir at 1/2 mL per gallon (5 mL).
4 ozA tent or small room's worth of weekly doses.
≈ 23
32 ozOur pickMultiple rooms, weekly through veg and bloom.
≈ 189
1 galBest valueCommercial-scale programs, dosed every week.
≈ 757
Running a commercial operation? Get pricing by the pail and the pallet →
Since 1999
Killer Roots for Killer Plants®
Family owned since 1999. Every batch is made and lab tested in the USA, and the full strain panel — all 11 of them — is printed right on the label.
Growers talk
Straight bacteria, real results.
Real reviews from this store's customers.
Run it with
Complete the stack.
They stack — each at its normal rate.
The flagshipGreat White Premium Mycorrhizae®
24 species in one powder — fungi for reach, bacteria for uptake. The pick for 9 out of 10 growers.
From Regular price 
Liquid mycoOrca® Liquid Mycorrhizae
Myco you can pour. Four endo species plus five Bacillus strains, made for aeroponics, misters, and ultra-clean reservoirs.
From Regular price Questions
Questions growers ask.
Which size should I get?
Price it per feed. One feed is 5 mL for a 10-gallon reservoir (1/2 mL per gallon): the 4 oz covers about 23 feeds, the 32 oz about 189, the gallon about 757.
How do I use it, and how often?
1/2 mL per gallon of water — soil, coco or any hydro system — weekly, through veg and bloom. Saturate the rootball by hand, through fertigation, or out the drip lines. Shake well before use.
Can I overdose King Crab?
Label rate is 1/2 mL per gallon. Running above it is fine; never exceed 5×.
Is it compatible with my nutrients?
King Crab runs with any fertilizer line. It's not a replacement for your feed — it's the supplement you run alongside it.
Which product do I need?
Simplest cut: Great White is the full-spectrum powder you use everywhere, all stages. Orca® is liquid myco for res changes, irrigation, and plants already in the ground. King Crab® is a bacteria-only booster you run with any feed through veg and bloom. They stack — each at its normal rate.
How should I store it?
For maximum shelf life, store between 40°F and 85°F. Never let it sit above 140°F — a hot car or a shed in July will cook the biology.
What does shipping cost?
Free on U.S. orders over $60$70. Under that, shipping is calculated at checkout from your address and order weight. Prefer to buy local? Find a shop near you.
The bacteria play
Stack bacteria on any program.
From Regular price $24.99 Sale price $21.25. Half a mL per gallon, weekly, alongside any fertilizer line.
Every strain and count, printed on the label.