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Black Flag Horticulture
  • Home
  • Bundle Deals
  • Growing Media
    • Coco Substrates
    • Soil Substrates
    • Rockwool & Jiffy Plugs
    • All Growing Media
  • Propagation
    • Propagators
    • Rockwool & Plugs
    • Rooting Agents
  • Environments
    • Propagation Grow Tents
    • Lighthouse Tents
    • Environments Accessories
  • Climate
    • Ducting & Accessories
    • Extraction & Filtering
    • Fans
    • Sheeting
    • Tapes
    • Temperature Control
    • Humidity Control
    • Odour Control
    • Metal Work
  • Lights
    • LED Grow Lights
    • Grow Lights
    • Grow Light Accessories
    • Shop All
  • Nutrients
    • Base Feeds
    • Root Development
    • Veg Boosters
    • Enzymes
    • Mag/Cal
    • Flowering Boosters
    • P.K
    • Plant Finishers
    • pH Regulators
    • Silicon
  • Organics
    • Organic Nutrients
    • Organic Growing Media
    • Organic Plant Additives
  • Irrigation
    • Connectors
    • Pipes
    • Chillers
  • Plant Health
    • Pest & Disease Control
    • Plant Health
  • Pots & Trays
    • Plant Pots
    • Fabric Plant Pots
    • Saucers
  • Tools
    • Tanks & Reservoirs
    • Measuring Tools
    • Plant Support
    • Magical Butter Machine
    • Harvesting
    • Metering & Timers
    • Spray Bottles & Pumpers
    • All Tools & Accessories
  • Catalogue
    • Shop All
    • Brands
    • All Collections
  • Information
    • About Us
    • Contact Us
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  • Intense Nutrients - Silicon Ultra - 250ml

    Intense Nutrients - Silicon Ultra - Pro Series

    Intense Nutrients - Silicon Ultra - Pro Series

    Regular price From £54.95 GBP
    Regular price Sale price From £54.95 GBP
    Unit price /  per 
  • Plant Magic - Silicon - 1 Litre

    Plant Magic - Silicon

    Plant Magic - Silicon

    Regular price From £19.95 GBP
    Regular price Sale price From £19.95 GBP
    Unit price /  per 
  • Essentials PLUS - SILICON

    Essentials PLUS - SILICON

    Essentials PLUS - SILICON

    Regular price From £2.99 GBP
    Regular price Sale price From £2.99 GBP
    Unit price /  per 
  • Grenade Nutrients - Green (Boost & Silicon)

    Grenade Nutrients - Green (Boost & Silicon)

    Grenade Nutrients - Green (Boost & Silicon)

    Regular price £100.00 GBP
    Regular price Sale price £100.00 GBP
    Unit price /  per 
  • Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Sale

    Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Regular price £43.95 GBP
    Regular price £49.99 GBP Sale price £43.95 GBP
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    Sale
  • Mills Nutrients - Vitalize - Plant Vigor Promoter - 1 Litre

    Mills - Vitalize (Plant Aid)

    Sale

    Mills - Vitalize (Plant Aid)

    Regular price £183.95 GBP
    Regular price £199.99 GBP Sale price £183.95 GBP
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  • Shogun - Silicon - 1 Litre

    Shogun - Silicon

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    Shogun - Silicon

    Regular price From £9.95 GBP
    Regular price £72.00 GBP Sale price From £9.95 GBP
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  • CX - Head Masta - Flowering Booster

    CX - Head Masta - Flowering Booster

    CX - Head Masta - Flowering Booster

    Regular price £98.99 GBP
    Regular price Sale price £98.99 GBP
    Unit price /  per 

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