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.
Growth Technology Formulex
Original price was: £4.99 – £33.99.£4.49 – £30.59Current price is: £4.49 – £30.59.
Plagron Mega Worm
Original price was: £4.99 – £13.99.£4.49 – £12.59Current price is: £4.49 – £12.59.
Canna PK 13/14
Original price was: £4.99 – £47.99.£4.49 – £43.19Current price is: £4.49 – £43.19.
Plant Magic Boosting Powder
Original price was: £4.99.£4.49Current price is: £4.49.
Vitalink Plant Start
Original price was: £5.99 – £33.99.£5.39 – £30.59Current price is: £5.39 – £30.59.
Shogun Silicon
Original price was: £5.99 – £67.99.£5.39 – £61.19Current price is: £5.39 – £61.19.
Ecothrive Charge
Original price was: £5.99 – £29.99.£5.39 – £26.99Current price is: £5.39 – £26.99.
Terra Aquatica FinalPart
Original price was: £5.99 – £49.99.£5.39 – £44.99Current price is: £5.39 – £44.99.
Ecothrive Neutralise
Original price was: £5.99 – £59.99.£5.39 – £53.99Current price is: £5.39 – £53.99.
House and Garden Shooting Powder 100g
Original price was: £6.99.£6.29Current price is: £6.29.
Bio Bizz Acti Vera
Original price was: £6.99 – £99.99.£6.29 – £89.99Current price is: £6.29 – £89.99.
Bio Bizz Fish Mix
Original price was: £6.99 – £114.99.£6.29 – £103.49Current price is: £6.29 – £103.49.
Vitalink Buddy
Original price was: £6.99 – £39.99.£6.29 – £35.99Current price is: £6.29 – £35.99.
Bio Green Flower Boost
Original price was: £6.99 – £34.99.£6.29 – £31.49Current price is: £6.29 – £31.49.
Clonex Pro Start
Original price was: £6.99 – £15.99.£6.29 – £14.39Current price is: £6.29 – £14.39.
Advanced Nutrients Flawless Finish
Original price was: £6.99 – £19.99.£6.29 – £17.99Current price is: £6.29 – £17.99.
Advanced Nutrients Liquid CarboLoad
Original price was: £7.99 – £109.99.£7.19 – £98.99Current price is: £7.19 – £98.99.
Canna Cannazym
Original price was: £7.99 – £129.99.£7.19 – £116.99Current price is: £7.19 – £116.99.
Shogun Cal Mag
Original price was: £7.99 – £84.99.£7.19 – £76.49Current price is: £7.19 – £76.49.
Dutchpro Leaf Green
Original price was: £7.99 – £49.99.£7.19 – £44.99Current price is: £7.19 – £44.99.
House and Garden PK13-14
Original price was: £7.99 – £49.99.£7.19 – £44.99Current price is: £7.19 – £44.99.
Growth Technology Liquid Oxygen (Oxy-Plus)
Original price was: £8.99 – £29.99.£8.09 – £26.99Current price is: £8.09 – £26.99.
Shogun Zenzym
Original price was: £8.99 – £149.99.£8.09 – £134.99Current price is: £8.09 – £134.99.
Ecothrive Flourish
Original price was: £8.99 – £74.99.£8.09 – £67.49Current price is: £8.09 – £67.49.
Bio Bizz Leaf Coat 500ml
Original price was: £9.99.£8.99Current price is: £8.99.
Advanced Nutrients Sensizym
Original price was: £9.99 – £94.99.£8.99 – £85.49Current price is: £8.99 – £85.49.
Liquid Orca by Plant Success
Original price was: £9.99 – £62.99.£8.99 – £56.69Current price is: £8.99 – £56.69.
Dutchpro Keep It Clean
Original price was: £9.99 – £279.99.£8.99 – £251.99Current price is: £8.99 – £251.99.
Bio Bizz Alg-A-Mic
Original price was: £9.99 – £219.99.£8.99 – £197.99Current price is: £8.99 – £197.99.
Shogun Geisha Foliar Spray
Original price was: £9.99 – £39.99.£8.99 – £35.99Current price is: £8.99 – £35.99.
Dutchpro Multi Total
Original price was: £9.99 – £189.99.£8.99 – £170.99Current price is: £8.99 – £170.99.
Shogun PK Warrior 9/18
Original price was: £9.99 – £149.99.£8.99 – £134.99Current price is: £8.99 – £134.99.
Shogun Dragon Force
Original price was: £9.99 – £84.99.£8.99 – £76.49Current price is: £8.99 – £76.49.
Growth Technology Nitrozyme
Original price was: £9.99 – £189.99.£8.99 – £170.99Current price is: £8.99 – £170.99.
GHEDirect LTD, 
