• -15%

CalMag - Top Crop

star star star star star

CalMag corrects calcium and magnesium deficiencies in marijuana crops, ideal for osmosis or soft water. Maintain a balance of 2 parts calcium to 1 part magnesium and adjust the E.C. to 0.4-0.5 before adding other nutrients.

100 day satisfaction guarantee


Discreet delivery worldwide


Unlimited cash on delivery

Urgent delivery in 24/48 hours  Urgent delivery in 24/48 hours
$11.65 taxes included

Click below for ALL OPTIONS
  • Description
  • Data Sheet
  • Questions
  • Reviews
  • Delivery and Payment
Play Play Text to Audio Speaker

CalMag from Top Crop is perfect for correcting and solving deficiencies in marijuana crops, because this fertilizer based on calcium and magnesium provides the right amount of these nutrients to achieve a perfect balance. CalMag is ideal for preparing the base water for irrigation in crops that use osmosis or very soft water, since in these cases there are usually Ca and Mg absorption problems.

How is CalMag used in crops?

It is important that the nutrient solution that we give to our plants always maintains a balance of 2 parts of calcium for each part of magnesium, and that between the two reach up to 0.4 or 0.5 of EC What do you want say this? Well, the irrigation water always has to have this base, so we have to add CalMag at the same time that we measure the electroconductivity, and reach 0.4 of EC Then we can continue adding nutrients to the irrigation, and the last thing would be to adjust the PH before watering.

CalMag can also be used to solve calcium and / or magnesium deficiencies. at a given moment of the cultivation, 2 key elements for the perfect development of marijuana plants, especially in some phases of cultivation.

Buy CalMag from Top Crop at the best price online

A plant lacking in calcium or magnesium will not be able to yield a great harvest, because they are very necessary nutrients for the growth and flowering of marijuana plants. With CalMag your plants will always look green, without deficiencies, excesses, or blockages, keep that in mind.

Cultivation phase: Cultivation phase Flowering
Properties: Properties Regulators pH
Brands: Brands Top Crop

  • Is the shipping discreet?

    Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.

  • Do you ship worldwide?

    Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.

    UK: 3-4 days (express)
    USA: 4-5 days (express)
    Australia: 4-5 days (express)
    Japan: 4-5 days (express)
    Canada: 4-5 days (express)
    South Africa: 4-5 days (express)
    New Zealand: 5-7 days (express)
    View all

    The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.

    We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.

    Due to problems with customs you can check here for restrictions to certain countries.

  • What payment methods and currencies do you accept?

    We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).

    You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.

  • How long does it take to ship my order?

    In 24/48 hours we will ship your order.

  • Are the seeds guaranteed to germinate?

    If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.

    If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.

    Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.

  • What if I receive a bad or damaged product?

    If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!

other products in the same category:
Customers who bought this product also bought:
Leave us your opinion or ask us any questions you have about this seed and participate in the raffle!

Among all those who comment or send us your questions, there will be a monthly raffle for a €50 voucher for your purchases at Pevgrow. What are you waiting for? Write us and participate!

Leave us your opinion or ask us any questions you have about this seed and participate in the raffle!
Write your comment or question for CalMag - Top Crop
Have you tried it? Rate the product and leave your opinion.

Only comments and doubts about the product please

We want to know your opinion and experiences about our products or help you with any doubts you may have about it. It helps us to improve and it can also help other customers to decide what to choose. That is why we have this great tool for commenting.
Good luck commenting!

Aspects to consider

Why have you chosen this valuation?
What did you like about the product?
Would you recommend the product?
What did you think of the PevGrow service?