Emerald Harvest Cali Pro Grow A & B

Price Match
£33.98 - £178.00
Emerald Harvest Cali Pro Grow A & B
Price Match
£33.98 - £178.00
Want it delivered by Saturday, 1st Jun?
£6.99 Next working day  (3pm cut-off)
£4.50 Standard delivery 2 - 4 working days (free on orders over £50)
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Emerald Harvest Cali Pro Grow A & B  2 Part Nutrient Series

  • Harness the full genetic potential of your valuable crops with Cali Pro Grow A & B and Cali Pro Bloom A & B Emerald Harvest's easy-to-use 2-part base nutrient series.
  • With Cali Pro, you spend less time measuring and tweaking your feeding program and more time tending to your high-value crops.
  • Our 2-part base nutrients are popular with growers who prefer to keep things simple.
  • With Cali Pro, feeding your crops couldn't be easier: just mix equal portions of parts A and B according to the application rates on the bottle or the feeding chart.

How Cali Pro Bloom A&B Works

Cali Pro Bloom A&B comes with a profile of macro nutrients that will bring the very best out of your plants during the flowering stages, featuring increased levels of phosphorus and potassium for heavier plants and increased essential oil production.  

These base nutrients use only high-grade chelated minerals, which form complexes that are more readily absorbed by the roots, ensuring that they get used more effectively. Because chelated nutrients are more available, they get absorbed at wider pH ranges than typical mineral nutrients, allowing your pH levels to fluctuate further than usual without leading to deficiencies. 

This makes it an excellent base nutrient for both experts and beginners; so it comes as little surprise that there are armies of satisfied customers out there who can attest to Cali Pro's effectiveness.

How to Use Cali Pro Bloom A&B

Use Cali Pro Grow during the vegetative stages and switch to Cali Pro Bloom when transitioning to the flowering stages, after flipping your plants to a '12 hours on / 12 hours off' cycle. Emerald Harvest actually recommend swapping to Cali Pro Bloom in the second week of flower. Add it a rate of 1.3 - 1.6ml per litre of nutrient solution. A copy of the Emerald Harvest feed chart can be found by clicking the link below this description.

Both parts of a 2-part nutrient are designed to be used together in equal amounts. Using only part A or part B, or using them in unequal amounts will result in a nutrient solution which is not properly balanced. This will almost certainly lead to your plants suffering from deficiencies.

As with all nutrients, boosters and additives, never mix them together in their concentrated form (i.e. straight out of the bottle). Always add each nutrient, booster or additive to your reservoir or feed water in turn, giving the solution a good stir to mix it in before adding the next one.

Cali Pro Bloom A&B is highly effective in any growing medium or system. The ideal pH range after mixing nutrients is 5.8 to 6.3. Keep water temperatures between 18° and 21°, using a chiller, if necessary.

Guaranteed analysis: Part A: 3-0-3; Part B: 1-4-6




Mainland England & Wales

  • Orders over £50 are Free Standard Delivery.
  • Orders under £50 are £4.50 Standard Delivery
  • Next Day Delivery £6.99

We ship parcels using DHL tracked Service. DHL will send you tracking information by email or text to inform you know when they will be delivering your parcel.

Small items are sent via a Royal Mail tracked service.

Our cut-off time for deliveries to leave us the same day is 3pm Monday to Friday.

In Stock: 1 - 2 Working Days

Out of Stock: 2 - 4 Working Days

Items Marked 'Out of Stock' on the website are not currently available from our supplier. Please call or email & we will update you when available.

If any item ordered is unavailable we will contact you by email or phone with expected delivery times. We only debit orders on dispatch so should you wish to cancel, we will do so.

Free Product Exchange:

We allow 30 days for a product exchange. On receipt of the original unused items we will return your exchange carriage free.

Terms and conditions apply.

Scottish Highlands / Northern Ireland

  • In Stock: £13.99 Delivery 1 to 2 Working Days

The cut off time for deliveries to leave us the same day is 3pm Monday to Friday.

We ship using DHL tracked service. DHL will send tracking information by email or text so you know when they will be delivering your parcel.

Small items are sent via a Royal Mail tracked service.

Free Collection:

Please arrange a collection time and date with our team if you wish to collect your order.