Bloom Yellow Bottles - Grow A&B

Bloom Yellow Bottles Grow A&B is a professional-grade, highly concentrated two-part base nutrient specifically formulated for the vegetative growth stage. Part of the Bloom Advanced Floriculture range, this specialist hydroponic grow nutrient provides essential macro and micronutrients to support vigorous plant development, healthy green foliage and strong vegetative growth.

Featuring chelated nutrients, fulvic acid and vitamins, Bloom Grow A&B is designed to improve nutrient availability and support efficient plant uptake. Its balanced, buffered formulation is suitable for hydroponics, coco coir and soil, making it a versatile choice for indoor and outdoor cultivation. Developed for dedicated vegetative feeding programmes, Grow A&B provides a nutritional foundation before transitioning to Bloom Flower A&B during the flowering stage.

Key Features

• Dedicated Vegetative Nutrient: Formulated specifically to support plant growth during the vegetative stage, particularly for growing cycles lasting longer than two weeks.
• Complete Two-Part Nutrition: Grow A and Grow B work together to supply essential macro and micronutrients required for healthy plant development.
• Highly Concentrated Formula: Low application rates provide economical feeding for both hobby growers and commercial cultivation.
• Chelated Nutrient Technology: Contains chelated nutrients designed to remain available to plants across a broad pH range.
• Supports Healthy Green Growth: Provides the nutritional foundation for vigorous foliage development and strong vegetative growth.
• Fulvic Acid and Vitamins: Includes additional ingredients that support nutrient availability and plant vitality.
• Buffered Nutrient Solution: Designed to produce a stable nutrient solution with a typical diluted pH of approximately 5.5–5.8.
• Multiple Growing Media: Suitable for hydroponic systems, coco coir and soil cultivation.
• Flexible Irrigation Compatibility: Can be used in recirculating hydroponic systems and run-to-waste feeding programmes.
• Indoor and Outdoor Growing: Suitable for use in grow tents, grow rooms, greenhouses and outdoor growing environments.
• Compatible with Bloom Additives: Can be incorporated into feeding programmes alongside products such as Bloom PRE and Bloom ROOTS.
• Dedicated Growth and Flowering Programme: Designed to be followed by Bloom Flower A&B when plants enter the flowering stage.

Specifications

Who It’s For

Bloom Yellow Bottles Grow A&B is ideal for growers seeking a specialist vegetative growth nutrient to support healthy plant development before flowering. Suitable for beginners, experienced hydroponic growers and commercial cultivators, this concentrated two-part fertiliser provides flexible feeding options across soil, coco and hydroponic growing systems. Whether growing in a compact indoor grow tent, a dedicated grow room, a greenhouse or a large-scale cultivation facility, Grow A&B is particularly well suited to growers using an extended vegetative cycle who want a dedicated base nutrient rather than an all-in-one grow and bloom formulation.

How To Use

Use Bloom Grow A&B as the primary base nutrient during the vegetative growth stage. Fill your nutrient reservoir or mixing container with clean water, then add Grow A at the appropriate dilution rate and mix thoroughly. Add an equal quantity of Grow B separately and mix again to ensure the nutrients are evenly distributed. Never mix the concentrated A and B solutions directly together before diluting them in water.

For recirculating hydroponic systems and soil cultivation, the recommended application rate is approximately 0.5–1ml per litre of water per part. For run-to-waste systems, use approximately 1–2ml per litre per part. Adjust the concentration according to the manufacturer's feeding schedule, plant requirements and growing method.

After mixing, check the nutrient solution's pH and EC levels to ensure they are appropriate for the growing medium and crop. The diluted formula is designed to achieve a pH of approximately 5.5–5.8, although actual readings may vary with water quality and other inputs. Continue using Grow A&B throughout the vegetative cycle, then switch to Bloom Yellow Bottles Flower A&B when plants transition into the flowering stage. Compatible Bloom Advanced Floriculture additives can be included as directed by the relevant feeding programme.

All orders are packed in plain discreet parcels with non descript labels for your personal security.

We offer the following shipping options to the mainland UK. If you live outside mainland UK please call us on +44 (0)1142 280024.

Royal Mail delivery options (mainland UK)

Royal mail tracked  £4.75 (up to 2KG only) 2-4 working days

Royal mail tracked  £3.75 (up to 2KG only) 3-5 working days

Courier  Delivery service options (mainland) Zone A Zone A+ Zone B Zone B+

Free delivery up to 25 kilos (over £99) 1-2 working days service 
Next working day  £6.75 up to 25KG 
Next working day am £9.95 over 25KG

Courier Delivery service options Zone C Zone C+ Zone D Zone D+

Next working day  £29.95 + 75P per kg over 25KG
Next working day am £35 + 75P per KG over 25KG

All packages are shipped in plain, discrete packaging. Absolutely NO information is passed to third parties.

Please note that paid for next day delivery only applies if you order before 1PM Monday to Thursday.

Our UK delivery zones: In the UK we have 4 zones. Prices and parcel delivery times vary by zone.


Tracking your consignments

Our deliveries are handled by Parcelforce or DX or Fedex depending on the weight and location.You are able to track your parcels by using your consignment number or customer reference and postcode. If using a reference number to search, please also insert the delivery postcode. You will receive an email on the day for dispatch confirming your order and tracking number, You have the option to select a delivery window or change the day of delivery by clicking the link below and manage my delivery option.


Other Services Available

Isle of Wight & isles of Scilly £5.99 extra per consignment

Timed booked delivery £15.99 extra per consignment

Long bulky items £29.99 extra per consignment (1.4m x 0.8m 0r two persons needs to carry )

We Won't Be Beaten On Price

At Hytec Horticulture we are committed to offering the best range of hydroponic products at the best possible prices. This is why we have our Price Match Promise, whereby if you find an identical product at one of our competitors for a lower price, we will match or even beat it.

In an ever-increasingly competitive marketplace, many product lines are being sold at varying prices. We want to give you the best deal so if you find any of the products we sell (or comparable products) at cheaper prices, give us a chance to get your business, save you money, and beat that price. 

Terms & Conditions

To qualify for the Price Match Promise, the product must conform to the following:

• The product in question must be identical (it should be the same brand & model and for sale with the same terms & conditions)
• The product must be held in stock by the competitor at the time you want to make the price match
• In addition to the above, we must also have the product in stock
• We must be able to verify the lower price either by the store's website, a phone call or a written quote on headed paper
• The product is not part of a promotion, sale or clearance offer
• The product must be available from a physical store that’s open to the public
• Our Price Match Promise is not available against web-only retailers, for example, eBay or Amazon, along with factory outlets, private or liquidation sales
• Typographical errors, incorrect pricing, voucher codes or additional discounts by the competitor, including their own price match offers, are excluded 

Large & Multiple Product Orders

If you want to place a large order with multiple products (for example, you're setting up a grow room from scratch and require a full setup including tent, lights, extraction, nutrients, grow media etc) then get in touch and we will aim to match, or even beat any quotes you’ve been given.