CALMAG OAC | Organic
A workhorse cal-mag for commercial rooms and serious home setups — concentrated, consistent, and easy to dose across many gallons.
Why it works:
- Calcium (4%) and magnesium (1%) — the pair fast-growing plants exhaust first
- Gentle liquid formula — mix it into your normal watering, no separate feeding routine
Why buy direct
More than a bottle on a shelf.
- Talk to real plant people. Questions about your plants? Our team makes the formula and answers directly — you're not on your own.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- Backed by our Healthy Plants Guarantee. Feed it for 30 days — if you don't see healthier growth, we'll make it right.
- Bundle savings you'll only find here. Pair it with any other TPS formula and ship free over $15.