Bloom Yellow Bottles - Ultra

Bloom Yellow Bottles Ultra is a highly concentrated flowering stimulator and early bloom enhancer designed to support the transition from vegetative growth to flowering. Part of the Bloom Advanced Floriculture nutrient range, ULTRA helps promote early flower development, encourage a more uniform flowering canopy and manage excessive plant stretching during the first two weeks of bloom.

Formulated using plant-derived extracts and other plant-supporting compounds, Bloom ULTRA is designed to help plants establish flowering sites early in the bloom cycle. It is particularly useful for growers working with limited vertical space, where controlling plant height and maintaining an even canopy can improve the efficiency of indoor cultivation.

Suitable for hydroponics, coco coir and soil cultivation, Bloom Yellow Bottles Ultra can be incorporated into a balanced nutrient feeding programme without replacing the normal base nutrients. Its concentrated formula offers an economical way to support the early flowering phase in grow tents, indoor grow rooms and greenhouse environments.

Key Features

• Concentrated early flowering stimulator designed to support the transition from vegetative growth to bloom.
• Encourages early flower site development during the first two weeks of flowering.
• Helps promote a more uniform flowering canopy by supporting an even transition into bloom.
• Designed to help reduce excessive plant stretching during the early flowering period.
• Supports compact plant development, making it useful for grow tents with limited headroom.
• Manufacturer-formulated to influence flowering development, including the expression of male flowers.
• Contains plant-derived ingredients including kelp extracts, alfalfa, humic acid and vitamin B1.
• Highly concentrated formula with a general application rate of 1ml per litre of nutrient solution.
• Designed for use during weeks 1 and 2 of flowering.
• Suitable for soil, coco coir and hydroponic growing systems.
• Compatible with different cultivation methods, including recirculating and run-to-waste irrigation systems.
• Can be used alongside suitable base nutrients as part of the Bloom Advanced Floriculture feeding programme.
• Suitable for indoor and outdoor cultivation.
• Australian-made formulation from Agricultural Organics.
• Available in 300ml, 1L, 2.5L, 15L and 25L sizes.

Specifications

Who It’s For

Bloom Yellow Bottles Ultra is ideal for growers who want to support a strong, consistent start to the flowering stage while managing plant height and canopy development. It is particularly suitable for hydroponic growers, coco cultivators and soil gardeners using controlled lighting schedules to initiate flowering.

Growers using SCROG (Screen of Green) techniques, indoor grow tents or cultivation spaces with limited vertical clearance may find ULTRA especially useful for managing early flowering stretch. It is also suitable for growers following the complete Bloom Advanced Floriculture nutrient programme who want a dedicated additive for the transition between vegetative growth and bloom.

How To Use

Use Bloom Yellow Bottles Ultra during the first two weeks of the flowering stage. For photoperiod-sensitive plants, begin application when switching from the vegetative lighting schedule to the flowering schedule, such as a 12-hour light / 12-hour dark cycle where appropriate for the crop.

Dosage: The general manufacturer application rate is 1ml per litre of nutrient solution. More specific rates are 0.5ml per litre for soil and recirculating hydroponic systems, 1ml per litre for run-to-waste systems and 0.5–1ml per litre for organic growing applications. Always follow the relevant Bloom feeding schedule for your cultivation method.

Mixing: Prepare your normal base nutrient solution, then measure and add the required amount of Bloom ULTRA. Mix thoroughly to ensure even distribution. Check and adjust the final pH and EC as appropriate for your growing medium and irrigation system.

Application Schedule: Apply ULTRA as part of the regular feeding programme during flowering weeks 1 and 2, then discontinue it as the plants progress into the next stage of bloom. Within the Bloom Advanced Floriculture programme, Bloom PHAT is used during the subsequent mid-flowering period.

Ongoing Care: Monitor plant development, internodal spacing and early flower formation throughout the application period. Maintain appropriate lighting, irrigation, temperature and humidity conditions to support healthy flowering. ULTRA is a flowering additive and should be used alongside a suitable base nutrient programme rather than as a standalone fertiliser.

Because Bloom ULTRA contains naturally derived ingredients, some variation in colour or consistency may occur between batches.

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.