Bloom Yellow Bottles - Silica

Bloom Yellow Bottles Silica is a highly concentrated potassium silicate plant supplement designed to strengthen plant structure, improve resilience and support healthy growth throughout the vegetative and flowering stages. Part of the Bloom Advanced Floriculture range, this professional-grade hydroponic silica additive helps reinforce plant cell walls, encouraging stronger stems, sturdier branches and improved tolerance to environmental stress.

Formulated with 53.2% potassium silicate, Bloom Silica provides a concentrated source of silicon to support structural development and help plants withstand challenging growing conditions. Silicon contributes to stronger plant tissues, helping reduce moisture loss through transpiration while supporting natural resistance to pests and fungal pressure. Suitable for hydroponics, coco coir and soil cultivation, Bloom Silica is a versatile supplement for indoor and outdoor growers looking to maintain stronger, healthier plants from vegetative growth through flowering.

Key Features

• Highly Concentrated Potassium Silicate: Contains 53.2% potassium silicate to support plant strength and structural development at low application rates.
• Strengthens Plant Cell Walls: Supplies silicon that contributes to stronger cell walls, helping develop sturdier stems, branches and foliage.
• Supports Heavy Flowers and Fruits: Helps reinforce plant structure so branches can better support developing flowers and fruit.
• Improves Environmental Stress Tolerance: Supports the plant's ability to cope with challenging conditions, including heat and water stress.
• Reduces Moisture Loss: Silicon can help limit excessive water loss through transpiration, supporting plant hydration and reducing susceptibility to wilting.
• Supports Natural Plant Defences: Stronger plant tissues can improve physical resistance to certain pests and fungal pathogens.
• Vegetative and Flowering Support: Suitable for use throughout the growing cycle, with application discontinued before the final harvest period.
• Highly Alkaline Formula: Can also be used to increase the pH of a nutrient solution when required.
• Economical Application Rates: Requires as little as 0.17ml per litre in recirculating and soil feeding programmes.
• Versatile Growing Media: Compatible with hydroponic systems, coco coir and soil growing.
• Multiple Irrigation Systems: Suitable for recirculating hydroponics and run-to-waste feeding programmes.
• Indoor and Outdoor Cultivation: Suitable for use in grow tents, grow rooms, greenhouses and outdoor growing environments.
• Compatible with Bloom Nutrients: Can be incorporated into the Bloom Advanced Floriculture feeding programme without reducing the recommended base nutrient dosage.
• Australian Manufactured: Produced in Australia by Agricultural Organics as part of the Bloom Yellow Bottles nutrient range.

Specifications

Who It’s For

Bloom Yellow Bottles Silica is ideal for growers looking to improve plant strength, stem development and environmental stress resistance throughout the growing cycle. Suitable for beginners, experienced hydroponic growers and commercial cultivators, this concentrated silicon plant supplement provides additional structural support for plants grown in soil, coco and hydroponic systems. Whether cultivating in a compact indoor grow tent, a dedicated grow room, greenhouse or larger commercial growing facility, Bloom Silica is particularly useful for plants developing heavy flowers or fruits, as well as crops exposed to heat, fluctuating humidity or other environmental stresses. It is also a practical addition to established hydroponic nutrient feeding programmes where stronger plant tissues and improved resilience are desired.

How To Use

Use Bloom Yellow Bottles Silica as a supplementary additive during the vegetative and flowering stages. For recirculating hydroponic systems and soil cultivation, the manufacturer's recommended application rate is 0.17ml per litre of nutrient solution. For run-to-waste systems, use 0.33ml per litre. Always follow the appropriate Bloom Advanced Floriculture feeding schedule for your growing method.

Because Bloom Silica is highly alkaline, it requires careful preparation. Dilute the measured Silica in a separate container of water and mix thoroughly. Adjust the diluted solution to approximately pH 7 before introducing it into the nutrient reservoir. Prepare and add your base nutrients according to the relevant feeding instructions, ensuring each component is thoroughly mixed. Never combine concentrated Silica directly with concentrated base nutrients or other additives, as incompatible concentrated solutions may cause precipitation.

Once all nutrients and supplements have been added, check the final solution's pH and EC levels and adjust as required for your crop and growing medium. When using Silica to increase nutrient solution pH, take care not to exceed the desired level. The manufacturer recommends continued application throughout the growing cycle, stopping at least one week before harvest during the final flushing period.

Important Handling Information: Bloom Silica is a strongly alkaline concentrate and must be handled with care. Wear suitable protective gloves and eye protection, avoid contact with skin and eyes, and keep the product away from children and pets. Always follow the manufacturer's label and safety instructions when measuring, diluting and applying the product.

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.