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๐ฟ Elevate your garden game with organic power-packed plant nutrition!
TPS Nutrients Organic Cal-Mag OAC is a 1-gallon liquid supplement delivering essential calcium, magnesium, iron, and micronutrients. Designed for both soil and hydroponic systems, it supports plant strength, growth, and nutrient uptake with an organic, USA-made formula trusted by thousands of gardeners.






| ASIN | B07CWQ7FPX |
| Best Sellers Rank | #24,931 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #640 in Garden Fertilizers |
| Brand | TPS NUTRIENTS |
| Brand Name | TPS NUTRIENTS |
| Coverage | Organic |
| Customer Reviews | 4.7 out of 5 stars 1,337 Reviews |
| Item Form | Liquid |
| Item Highlight | Formulated with Iron and Micronutrients, For Coco Coir and Hydroponic, Corrects Deficiencies, Supports Heavy Feeding Programs |
| Item Weight | 8 pounds |
| Liquid Volume | 128 fluid ounces |
| Manufacturer | TPS Nutrients |
| Mixing Ratio | 1-2 mL per gallon |
| Model Number | 857611006170 |
| Number of Items | 1 |
| Part Number | TPSCMOAC1G |
| Specific Uses For Product | Organic |
| Target Species | all types of indoor and outdoor plants |
| UPC | 857611006774 |
| Unit Count | 128 Fluid Ounces |
T**B
Best Cal-Mag on the Market.
My go to for Cal-Mag and Micros, its perfect for any plant but I find its best for Canna, Iโve been using this stuff for the past 3 years, No Iโm not sponsored, But this stuff is worth it. It is so much better than literally any cal mag on the market, its organic and it actually works. Another cool thing is it doesnโt have nitrogen in it so you donโt need to worry about any added N unlike some Cal-Mag brands. Thank you!
N**R
Top of the Line
Works great on plantsโฆ. Exactly what they need
T**.
It's the calmag
Organic calmag. Works where its needed but not needed in some cases.
J**Y
Fantastic calmag
I love that this has about 2x the amount of calcium of any other one on the market. I have looked around a lot but I dont know everything about it but I been growing for over 12 years and this is the best calmag I have used yet. Yes it smells like vinegar but how else are you going to get organic calmag? Idk about anybody else but organic growing stinks to me I can smell it no doubt. If you dont like synthetic then you better get used to the smell or use some synthetic that says its organic. I just know that this makes my plants extremely happy and I will be using this for as long as they sell it.
E**.
Works well but has a vinegar smell
The plants like the nutrients and grow fast, but the chemical has a vinegar smell that is unpleasant to the user until it is mixed with water. The mix could be a little stronger concentration. I used a separate micronutrient mix that also has calcium and magnesium, so it mixes well, but if you plan on using it as a stand-alone product, you may need to use more than the instructions call for.
G**N
Quality product when used as directed
Love this stuff. I add to my regular feeding regime and my plants look great!
T**A
As described
Happy with everything
J**E
Best there is
Awesome stuff organic bestthier is fair price aswell
Trustpilot
3 weeks ago
2 weeks ago