Never use raw rockwool! The pH is too high. Always soak rockwool before using it for the 1st time. Soak with water or a nutrient mixture with the pH adjusted to 5 and an EC of about 1.3. As well as correcting pH & EC, a pre-soak also ensures an even distribution of the nutrient solution throughout the slab.

Light breaks down iron chelates! Because of this, it is very important to ensure that no Ultra Violet light falls on the nutrient solution. Light also causes algae to grow in the nutrient solution, which can lead to blockages. Furthermore, algae can take up nutrient elements and cause nutrient deficiencies to occur.

Make sure the rockwool slabs are horizontal. If they are not truly horizontal the moisture will run to one end of the slab. This could mean that some plants become too dry and others too wet.

Keep note of the amounts of nutrients and additives you add to each tank of nutrients you mix. You then have a good starting point for the next time!

Don’t just measure the EC of the feed water and the drainage water regularly, remember to measure the EC of the substrate too.

You can easily distinguish between CANNA Classic A and B products because the A bottle contents is coloured and the B bottle contents is colourless.

Take your time diluting and adjusting your nutrient tank! This is essential for the growth, flowering and development of the plants and will yield the best results.

If you are using CANNA RHIZOTONIC always add this to the feed water, test the pH and adjust pH as necessary.

When you dilute an acidic product, always add the acid to the water, never add water to the acid, if it splashes it will cause burns on your skin or in your eyes!

CANNAZYM extends the life-span of Clay Pebbles and other growing mediums because it breaks down dead roots.

We recommend to use PK 13/14 always for one week! CANNA nutrients already contain a certain amount of P and K. When the plant is in a certain stage of the flowering stage we can't increase the feed for the plant any more, so we change the PK-ratio by adding PK 13/14 for one week.

Trichoderma (a fungus family) do not kill bacteria. Most Trichoderma protect the plant against harmful fungi. This is because they eat other fungi. They stimulates the root environment so roots can develop better and with more root hairs. As a result the plant gains more vitality.

Never dilute more CANNAZYM than will be used within 10 days.

Foliar feeding with RHIZOTONIC is most efficient when this is carried out around the time that the lights go out when cultivating inside, or just before sunset when cultivating outside.

Prevent the accumulation of phosphate and potassium by using PK 13/14 no more than one week.