Canna Calmag 1 Litre

Canna Calmag 1 Litre

Canna Calmag 1 Litre


In response to popular demand, CANNA has produced a CALMAG AGENT. You can use this product to increase the EC of your soft water. It will harden your water to make sure your plant can grow strong and healthy.

Fewer deficiencies

Increase in nutrient uptake

Stronger plants

Stimulates better-quality flowers

Highly concentrated

Increases the EC of your water

Less nutrients required

Soft water has an EC level of below 0.4. With CANNA CALMAG AGENT you can raise your EC level to 0.4.

Normal water has an EC level between 0.4 and 0.7. It contains calcium, magnesium and bicarbonate to stabilise the pH. All CANNA products are designed to work best with this type of water.

Hard water (EC>0.8) contains more calcium and magnesium than the plant can handle. When you’re growing plants, the best way to treat this kind of water is to use a reverse osmosis filter and then mix your hard water with the R.O. water, until you reach an EC level of 0.4. Or, more easily, you can use 100% R.O. water and then use CANNA CALMAG AGENT to raise your EC level to 0.4.

You can also test the water yourself using an EC meter and 2 small tests based on colour indication. First, measure the EC to be sure it is not Soft or Normal water:

EC 0.0-0.3: the water is Soft

EC 0.4-0.7: the water is Normal

You can also ask your water supplier what type of water you have if you get stuck.

Write a review

Note: HTML is not translated!
    Bad           Good

We Offer Unbeatable Service!

  • Free Delivery On All Items
  • Plain & Discreet Packaging
  • Orders Dispatched Same Working Day
  • Brand: Canna
  • Product Code: 101167
  • Availability: In Stock
  • £14.99

FREE Delivery

Free delivery on all of our products. Whether it's a spare part for a hydroponics system, a bottle of nutrients or a complete grow setup, we've got you covered! Uprade to Next Working Day delivery for less than a fiver. Saturday & Sunday deliveries available at checkout.

Safe & Secure Checkout

We take your security and privacy very seriously at a1mhydro.co.uk!

Price Match

Seen it cheaper elsewhere? We are always checking our prices to make sure we are VERY Competitive but please let us know at sales@a1mhydro.co.uk so we can sort it for you