Hello and Welcome To BuildASoil...

Have The Best Indoor Grow Of Your Life

High Quality Products and Free Education

BuildASoil  |  SKU: COW102

Cow Cal 24 - Food Grade Calcium + Phosphorus

Rated 5.0 out of 5
Based on 37 reviews
$25.00
Shipping calculated at checkout.
Size

Quality First

BuildASoil is committed to sourcing the highest quality ingredients you can trust. over 10,000 Five Star Reviews and over a decade in business

Delivery and Shipping

 

BuildASoil Shipping Policy

At BuildASoil, we’re committed to providing the most affordable and reliable shipping possible—for both our customers and our business. We continuously evaluate and improve our fulfillment process to ensure faster, smoother deliveries. We know shipping is often a pain point in shopping online, and our goal is to make it feel painless. For full details, please read the complete policy below.

Notice: Each product page displays accurate estimated delivery windows based on real-time fulfillment and carrier schedules.


📦 Shipping Options 
  • BuildASoil Shipping: Our complimentary shipping method for qualifying orders. We choose the most cost-effective carrier and shipping method. Delivery may take up to 10 business days. Most items qualify when you purchase two or more eligible products. Some qualify individually.
  • Standard Shipping:  A paid option where we ship using standard ground services.   
     
  • Standard Shipping: Rushed Out the Door! Includes everything in Standard Shipping, but adds on same day order processing (not guaranteed).
  • Get It Fast: Our expedited service. Orders are shipped with 2-3 day transit times and are prioritized for fulfillment, with most leaving the same business day (not guaranteed).
  • Overnight It: Ships via overnight service with immediate fulfillment for urgent deliveries.
  • FedEx Freight (Economy or Priority): For large or heavy orders. All freight ships via FedEx Freight unless arranged otherwise. Contact us in advance if no liftgate is required.
  • Pickup at Factory Store – Available Within 24 Hours! Select this option to pick up your order at our factory store. We'll notify you when it's ready. Bring your order confirmation and a valid ID.
Option Cost Transit Speed Fulfillment Speed Notes
BuildASoil Shipping Free Up to 10 business days Standard Free on any eligible items; ships at our discretion
Standard Shipping Paid 3-7 business Days Standard Standard handling and transit
Standard Shipping: Rushed Out the Door! Paid (slightly more) 3-7 business Days Same Day Fast handling out the door with standard transit
Get It Fast Higher 2–3 business days Same Day Fast handling and transit
Overnight It Highest 1 business day ASAP Fastest possible option
Pickup at Factory Store Free N/A Ready In 24hrs Local pickup option
FedEx Freight Economy Varies by order 2–9 business days (varies) Varies For large or heavy orders
FedEx Freight Priority Varies by order 2–7 business days (faster) Varies For large or heavy orders

🚚 Carriers Used

We ship with FedEx, UPS, and USPS. Carrier preference is not guaranteed unless explicitly communicated to us. 


📮 PO Boxes 

Orders shipped to PO Boxes often require additional costs and are not eligible for free shipping. Use a physical address to avoid delays and fees.


🏝️ Outside Continental US

We ship to Alaska, Hawaii, Puerto Rico, Guam, Northern Mariana Islands and the U.S. Virgin Islands. Free shipping generally does not apply to large or bulky items shipped to these locations. Hawaii and Alaska do have more flexibility with this due to carrier policies. Quotes will be calculated at checkout or by request.


🇨🇦 Canada Orders

We do ship to Canada for select items. Canadian customers must choose “UPS Standard® Shipping to Canada with no Surprises!” at checkout to ensure proper customs clearance and avoid unexpected brokerage fees or delays. Orders using other methods may be subject to delays or rejection at customs.


🏭 Vendor-Fulfilled Items

Some products are fulfilled by vendor partners and display estimated ship dates on their product pages. Questions about these items should be sent to support@buildasoil.com.


🚛 Freight Shipments

Freight deliveries involve pallets via box trucks or semis. Liftgate service is assumed unless specified otherwise.

Important: Inspect all freight shipments before signing. Count and examine all packages. Signing the delivery receipt confirms that the order arrived in full and undamaged.


🚛 Full Truckloads

Orders that qualify for full truckload (FTL) delivery will be custom quoted after checkout. Rates are based on location, order volume, and unloading requirements.

  • Indicate if you have a dock, forklift, or unloading equipment.
  • If you need liftgate or manual unload service, please notify us.
  • Contact support@buildasoil.com in advance for FTL quotes.

🔍 Order Tracking

Tracking information is emailed upon shipment. If not received, visit buildasoil.aftership.com and enter your order details. For help, contact support@buildasoil.com.


🛡️ Shipping Protection

This low-cost optional add-on at checkout insures your shipment against loss, theft, and damage. Claims are fast-tracked for resolution or replacement.

Even with protection, we encourage submitting photos, videos, and documentation to assist our carrier claims process.


📋 Claims Policy

All claims must be submitted via support@buildasoil.com. Phone-based claims are not accepted.

Required Documentation:

  • Issue description
  • Photos/videos of damage, missing or incorrect items
  • Images of packaging and labels

Do not discard packaging or damaged items—carriers may require inspection.

Claim Deadlines

  • Damage / Missing Items: Within 5 business days of delivery
  • Incorrect Products: Within 30 days of delivery
  • Lost or Misdelivered Packages: Within 30 days of shipment

⚠️ Responsibility Disclaimer

Once an order leaves our facility, we are not liable for delays, damage, or misdelivery caused by the carrier. We assist with claims but final decisions rest with the carrier.

We have zero tolerance for mistreatment of delivery drivers. Verified misconduct may result in cancellation and refund of your order minus shipping costs.

Description

🌿🐄 Cow Cal 24 - Plant Calcium Supplement 🌿🐄

Made exclusively from Grass Fed Cattle from Denmark, this is the cleanest High Calcium and Phosphorous product we have ever found. 

Calcium is one of the MOST important elements and it's not always easily available. 

Product Overview:

  • 24%-29% Calcium
  • 8%-15% Phosphorous
  • 3-6% Protein with all Amino Acids
  • 1-2% Magnesium 

Cow Cal 24 is an innovative calcium supplement derived from milk whey. It contains 24% calcium and 8% Phosphorous, making it a potent and effective option for plant nutrition. This product is organically available to plants, ensuring efficient uptake and utilization.

Try it with Yah Whey for the Holy Cow Effect!

Composition and Benefits:

  • Cow Cal 24 boasts a calcium concentration significantly higher than standard steamed bone meal, providing a more plant-available form of this essential nutrient.
  • The formula has a neutral pH, which is crucial for maintaining soil health and ensuring optimal nutrient availability for plants.
  • Unlike Calcium Carbonate, Cow Cal 24 does not alter soil pH, making it a more balanced and versatile option for calcium supplementation.
  • NOTICE: We were able to bring in the only exclusive: 100% Grass Fed Version of this material for distribution into the USA from Denmark. 

Environmental and Health Advantages:

  • Our supplement is a food-grade ingredient, contrasting favorably with mined minerals in terms of bioavailability and ecological impact.
  • Cow Cal 24 is free from high levels of heavy metals, often a concern with other mineral sources, ensuring a safer option for both plants and the environment.

Use and Efficacy:

Cow Cal 24 is designed to synergize the roles of calcium and phosphorus in plant development. While calcium is vital for cellular structure and function, phosphorus is key for energy transfer. This supplement is especially beneficial in promoting robust plant growth, improving overall plant health, and enhancing resistance to environmental stress.

Application:

Suitable for a wide range of plant types, Cow Cal 24 can be used as a part of a regular feeding regimen or as a targeted supplement to address specific calcium deficiencies.

Directions For Use: NOTICE NEW PRODUCT AND WE ARE ACTIVELY WORKING ON BEST PRACTICES. 

Drench: Update: Best results so far at 1 Teaspoon Per Gallon

NOTICE: Foliar Spray will leave white residue on leaves. Working on dose and mixture that does not leave residue. 

Updates to Directions will come as we use the product more

Questions?

We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

average rating 5.0 out of 5
Based on 37 reviews
  • 5 Stars
    37 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
97% of reviewers would recommend this product to a friend
Customer photos and videos
37 Reviews
Reviewed by Mike E.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great source of calcium

This stuff works great. I was looking for a safe source of calcium and plants seem to respond very well to it. My last run i was noticing some little rust spots on the leaves in flower that I figured was probably calcium deficiency and have not had any this time around.

Loading...
Was this helpful?
Reviewed by William D.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Cow cal 24

I love this stuff. I use a little less then 1 tsp per gallon once a week. I don’t even do full organic but this is one of my favorites all around

Loading...
Was this helpful?
Reviewed by Edward
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Haven't tried it yet but I am excited to add it to my collection. I don't think I've ever had bad results from bas

Loading...
Was this helpful?
Reviewed by Allen C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Excellent product

Good stuff for the money, seems to be helping my ladies along nicely!

Loading...
Was this helpful?
Reviewed by Thomas A.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great combo

Loving using this for top dressing

Loading...
Was this helpful?