Additives
At The Greenhouse Effect we stock a large selection of additives and nutrients for hydroponic gardening.
If you need any help please call us on 01908 585 283, our highly knowledgeable staff will be happy to assist you.
Canna Boost Accelerator
Original price was: £23.99 – £359.99Price range: £23.99 through £359.99. Price range: £21.59 through £323.99Current price is: £21.59 – £323.99Price range: £21.59 through £323.99.Canna Boost Accelerator
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Dutchpro Explode
Original price was: £29.99 – £1,099.99Price range: £29.99 through £1,099.99. Price range: £26.99 through £989.99Current price is: £26.99 – £989.99Price range: £26.99 through £989.99.Dutchpro Explode
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Canna Cannazym
Original price was: £7.99 – £129.99Price range: £7.99 through £129.99. Price range: £7.19 through £116.99Current price is: £7.19 – £116.99Price range: £7.19 through £116.99.Canna Cannazym
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Canna Rhizotonic
Original price was: £13.99 – £219.99Price range: £13.99 through £219.99. Price range: £12.59 through £197.99Current price is: £12.59 – £197.99Price range: £12.59 through £197.99.Canna Rhizotonic
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Field Marshal Flower Bomb
Original price was: £102.99 – £474.99Price range: £102.99 through £474.99. Price range: £92.69 through £427.49Current price is: £92.69 – £427.49Price range: £92.69 through £427.49.Field Marshal Flower Bomb
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Canna Calmag Agent
Original price was: £14.99 – £59.99Price range: £14.99 through £59.99. Price range: £13.49 through £53.99Current price is: £13.49 – £53.99Price range: £13.49 through £53.99.Canna Calmag Agent
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Canna PK 13/14
Original price was: £4.99 – £47.99Price range: £4.99 through £47.99. Price range: £4.49 through £43.19Current price is: £4.49 – £43.19Price range: £4.49 through £43.19.Canna PK 13/14
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Dutchpro Multi Total
Original price was: £9.99 – £189.99Price range: £9.99 through £189.99. Price range: £8.99 through £170.99Current price is: £8.99 – £170.99Price range: £8.99 through £170.99.Dutchpro Multi Total
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Ecothrive Neutralise
Original price was: £5.99 – £179.99Price range: £5.99 through £179.99. Price range: £5.39 through £161.99Current price is: £5.39 – £161.99Price range: £5.39 through £161.99.Ecothrive Neutralise
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Bio Bizz Fish Mix
Original price was: £4.99 – £119.99Price range: £4.99 through £119.99. Price range: £4.49 through £107.99Current price is: £4.49 – £107.99Price range: £4.49 through £107.99.Bio Bizz Fish Mix
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Bio Bizz Bio Heaven
Original price was: £21.99 – £389.99Price range: £21.99 through £389.99. Price range: £19.79 through £350.99Current price is: £19.79 – £350.99Price range: £19.79 through £350.99.Bio Bizz Bio Heaven
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Plant Success Great White
Original price was: £12.99 – £284.99Price range: £12.99 through £284.99. Price range: £11.69 through £256.49Current price is: £11.69 – £256.49Price range: £11.69 through £256.49.Plant Success Great White
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Bio Bizz Top Max
Original price was: £8.99 – £349.99Price range: £8.99 through £349.99. Price range: £8.09 through £314.99Current price is: £8.09 – £314.99Price range: £8.09 through £314.99.Bio Bizz Top Max
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Alien Root Rot X
Original price was: £19.99 – £69.99Price range: £19.99 through £69.99. Price range: £17.99 through £62.99Current price is: £17.99 – £62.99Price range: £17.99 through £62.99.Alien Root Rot X
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Bio Bizz Calmag
Original price was: £4.99 – £99.99Price range: £4.99 through £99.99. Price range: £4.49 through £89.99Current price is: £4.49 – £89.99Price range: £4.49 through £89.99.Bio Bizz Calmag
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Dutchpro Take Root
Original price was: £19.99 – £349.99Price range: £19.99 through £349.99. Price range: £17.99 through £314.99Current price is: £17.99 – £314.99Price range: £17.99 through £314.99.Dutchpro Take Root
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Bio Bizz Acti Vera
Original price was: £6.99 – £99.99Price range: £6.99 through £99.99. Price range: £6.29 through £89.99Current price is: £6.29 – £89.99Price range: £6.29 through £89.99.Bio Bizz Acti Vera
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Biosys – Instant Microbe Tea
Original price was: £11.99 – £149.99Price range: £11.99 through £149.99. Price range: £10.79 through £134.99Current price is: £10.79 – £134.99Price range: £10.79 through £134.99.Biosys – Instant Microbe Tea
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Dutchpro CalMag
Original price was: £19.99 – £89.99Price range: £19.99 through £89.99. Price range: £17.99 through £80.99Current price is: £17.99 – £80.99Price range: £17.99 through £80.99.Dutchpro CalMag
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Growth Technology Liquid Oxygen (Oxy-Plus)
Original price was: £8.99 – £29.99Price range: £8.99 through £29.99. Price range: £8.09 through £26.99Current price is: £8.09 – £26.99Price range: £8.09 through £26.99.Growth Technology Liquid Oxygen (Oxy-Plus)
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Clonex Pro Start
Original price was: £6.99 – £15.99Price range: £6.99 through £15.99. Price range: £6.29 through £14.39Current price is: £6.29 – £14.39Price range: £6.29 through £14.39.Clonex Pro Start
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Shogun Cal Mag
Original price was: £6.99 – £159.99Price range: £6.99 through £159.99. Price range: £6.29 through £143.99Current price is: £6.29 – £143.99Price range: £6.29 through £143.99.Shogun Cal Mag
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Green Planet Rezin
Original price was: £21.99 – £299.99Price range: £21.99 through £299.99. Price range: £19.79 through £269.99Current price is: £19.79 – £269.99Price range: £19.79 through £269.99.Green Planet Rezin
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Plagron Mega Worm
Original price was: £12.99 – £13.99Price range: £12.99 through £13.99. Price range: £11.69 through £12.59Current price is: £11.69 – £12.59Price range: £11.69 through £12.59.Plagron Mega Worm
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House and Garden Shooting Powder 100g
Original price was: £6.99.£6.29Current price is: £6.29.House and Garden Shooting Powder 100g
Buddhas Tree PK 9-18
Original price was: £14.99 – £299.99Price range: £14.99 through £299.99. Price range: £13.49 through £269.99Current price is: £13.49 – £269.99Price range: £13.49 through £269.99.Buddhas Tree PK 9-18
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Shogun Silicon
Original price was: £5.99 – £159.99Price range: £5.99 through £159.99. Price range: £5.39 through £143.99Current price is: £5.39 – £143.99Price range: £5.39 through £143.99.Shogun Silicon
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Advanced Nutrients Overdrive
Original price was: £11.99 – £229.99Price range: £11.99 through £229.99. Price range: £10.79 through £206.99Current price is: £10.79 – £206.99Price range: £10.79 through £206.99.Advanced Nutrients Overdrive
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Shogun Sumo Boost Active
Original price was: £14.99 – £394.99Price range: £14.99 through £394.99. Price range: £13.49 through £355.49Current price is: £13.49 – £355.49Price range: £13.49 through £355.49.Shogun Sumo Boost Active
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Xtreme Gardening Mykos
Original price was: £24.99 – £39.99Price range: £24.99 through £39.99. Price range: £22.49 through £35.99Current price is: £22.49 – £35.99Price range: £22.49 through £35.99.Xtreme Gardening Mykos
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Shogun Sumo Boost
Original price was: £14.99 – £384.99Price range: £14.99 through £384.99. Price range: £13.49 through £355.49Current price is: £13.49 – £355.49Price range: £13.49 through £355.49.Shogun Sumo Boost
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Growth Technology Formulex
Original price was: £4.99 – £76.99Price range: £4.99 through £76.99. Price range: £4.49 through £69.29Current price is: £4.49 – £69.29Price range: £4.49 through £69.29.Growth Technology Formulex
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Bio Bizz Alg-A-Mic
Original price was: £5.99 – £219.99Price range: £5.99 through £219.99. Price range: £5.39 through £197.99Current price is: £5.39 – £197.99Price range: £5.39 through £197.99.Bio Bizz Alg-A-Mic
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Superthrive
Original price was: £12.99 – £549.99Price range: £12.99 through £549.99. Price range: £11.69 through £494.99Current price is: £11.69 – £494.99Price range: £11.69 through £494.99.Superthrive
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Shogun Dragon Force
Original price was: £9.99 – £189.99Price range: £9.99 through £189.99. Price range: £8.99 through £170.99Current price is: £8.99 – £170.99Price range: £8.99 through £170.99.Shogun Dragon Force
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Advanced Nutrients Big Bud
Original price was: £10.99 – £264.99Price range: £10.99 through £264.99. Price range: £9.81 through £238.49Current price is: £9.81 – £238.49Price range: £9.81 through £238.49.Advanced Nutrients Big Bud
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