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.
Dutchpro Explode
Original price was: £29.99 – £579.99.£26.99 – £521.99Current price is: £26.99 – £521.99.
Canna Boost Accelerator
Original price was: £23.99 – £369.99.£21.59 – £332.99Current price is: £21.59 – £332.99.
Canna Cannazym
Original price was: £7.99 – £129.99.£7.19 – £116.99Current price is: £7.19 – £116.99.
Canna Rhizotonic
Original price was: £13.99 – £219.99.£12.59 – £197.99Current price is: £12.59 – £197.99.
Canna PK 13/14
Original price was: £4.99 – £47.99.£4.49 – £43.19Current price is: £4.49 – £43.19.
Ecothrive Neutralise
Original price was: £5.99 – £59.99.£5.39 – £53.99Current price is: £5.39 – £53.99.
Shogun Cal Mag
Original price was: £7.99 – £84.99.£7.19 – £76.49Current price is: £7.19 – £76.49.
Bio Bizz Fish Mix
Original price was: £6.99 – £114.99.£6.29 – £103.49Current price is: £6.29 – £103.49.
Plagron Mega Worm
Original price was: £4.99 – £13.99.£4.49 – £12.59Current price is: £4.49 – £12.59.
Shogun Zenzym
Original price was: £8.99 – £149.99.£8.09 – £134.99Current price is: £8.09 – £134.99.
Bio Bizz Bio Heaven
Original price was: £21.99 – £389.99.£19.79 – £350.99Current price is: £19.79 – £350.99.
Great White by Plant Success
Original price was: £12.99 – £59.99.£11.69 – £53.99Current price is: £11.69 – £53.99.
Shogun Dragon Force
Original price was: £9.99 – £84.99.£8.99 – £76.49Current price is: £8.99 – £76.49.
Dutchpro Multi Total
Original price was: £9.99 – £189.99.£8.99 – £170.99Current price is: £8.99 – £170.99.
Biosys – Instant Microbe Tea
Original price was: £11.99 – £49.99.£10.79 – £44.99Current price is: £10.79 – £44.99.
Shogun Silicon
Original price was: £5.99 – £67.99.£5.39 – £61.19Current price is: £5.39 – £61.19.
Shogun Sumo Boost Active
Original price was: £14.99 – £419.99.£13.49 – £377.99Current price is: £13.49 – £377.99.
Bio Bizz Top Max
Original price was: £14.99 – £349.99.£13.49 – £314.99Current price is: £13.49 – £314.99.
Canna Calmag Agent
Original price was: £14.99 – £59.99.£13.49 – £53.99Current price is: £13.49 – £53.99.
Bio Bizz Acti Vera
Original price was: £6.99 – £99.99.£6.29 – £89.99Current price is: £6.29 – £89.99.
Plant Magic Evolution 2.0 Foliar Spray
Original price was: £10.99 – £59.99.£9.89 – £53.99Current price is: £9.89 – £53.99.
Bio Bizz Calmag
Original price was: £9.99 – £104.99.£8.99 – £94.49Current price is: £8.99 – £94.49.
Ecothrive Charge
Original price was: £5.99 – £29.99.£5.39 – £26.99Current price is: £5.39 – £26.99.
Bio Bizz Root Juice
Original price was: £12.99 – £199.99.£11.69 – £179.99Current price is: £11.69 – £179.99.
Xtreme Gardening Mykos
Original price was: £24.99 – £39.99.£22.49 – £35.99Current price is: £22.49 – £35.99.
Evoponic PK Bulk
Original price was: £49.99 – £189.99.£44.99 – £170.99Current price is: £44.99 – £170.99.
Growth Technology Liquid Oxygen (Oxy-Plus)
Original price was: £8.99 – £29.99.£8.09 – £26.99Current price is: £8.09 – £26.99.
Shogun Katana Roots
Original price was: £11.99 – £129.99.£10.79 – £116.99Current price is: £10.79 – £116.99.
Psycho Myco Powder – Mighty Mycorrhizae
Original price was: £12.99 – £179.99.£11.69 – £161.99Current price is: £11.69 – £161.99.
Advanced Nutrients Big Bud
Original price was: £12.99 – £284.99.£11.69 – £256.49Current price is: £11.69 – £256.49.
Shogun Sumo Boost
Original price was: £14.99 – £419.99.£13.49 – £377.99Current price is: £13.49 – £377.99.
Shogun PK Warrior 9/18
Original price was: £9.99 – £149.99.£8.99 – £134.99Current price is: £8.99 – £134.99.
Dutchpro Take Root
Original price was: £19.99 – £349.99.£17.99 – £314.99Current price is: £17.99 – £314.99.
Dutch Pro CalMag
Original price was: £19.99 – £89.99.£17.99 – £80.99Current price is: £17.99 – £80.99.
Optic Foliar Switch
Original price was: £24.99 – £74.99.£22.49 – £67.49Current price is: £22.49 – £67.49.
Green Planet Rezin
Original price was: £19.99 – £299.99.£17.99 – £269.99Current price is: £17.99 – £269.99.
GHEDirect LTD, 
