Mad Farmers Cal+Mag is a readily available Calcium/Magnesium supplement designed to improve soil nutrient conditions for better plant mass and prevent nutrient deficiency-based plant disorders due to with Calcium/Magnesium deficiencies such as blossom end rot. Mad Farmers Cal+Mag is highly recommended when using RO water or coco coir mediums that lack the proper levels of Calcium and Magnesium to ensure vigorous plant growth. For best results use Cal+Mag as a general-purpose Calcium/Magnesium supplement with every feeding. Mad Farmers Cal+Mag should be added to nutrient solutions and/or used as a foliar spray. Mad Farmers Cal+Mag contains no dyes, and is compatible with all nutrient programs and growing mediums.
Calcium Nitrate
Magnesium Nitrate
Iron EDTA
Apply Cal+Mag to increase Calcium levels when Calcium deficiencies are present or whenever additional levels of soluble Calcium are needed.
Hydroponics, Coco & Soil Applications
1-2 mL (1/4 – 1/2 tsp) per gallon
5 mL (1 tsp) per gallon
5-10 mL (1 – 2 tsp) per gallon
10-15 mL (2 – 3 tsp) per gallon
15 mL (3 tsp) per gallon
5 mL (1 tsp) per quart
AVAILABLE ONLINE ONLY
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.