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.
Field Marshal Flower Bomb
Original price was: £99.99 – £450.00.£89.99 – £450.00Current price is: £89.99 – £450.00.
Essentials Calmag
Original price was: £12.99 – £39.99.£11.69 – £35.99Current price is: £11.69 – £35.99.
Rhizoflora Terpinator 23 Litre
Original price was: £269.99.£242.99Current price is: £242.99.
Advanced Nutrients Tasty Terpenes 1 Litre
Original price was: £44.99.£40.49Current price is: £40.49.
Advanced Nutrients Flawless Finish
Original price was: £6.99 – £19.99.£6.29 – £17.99Current price is: £6.29 – £17.99.
House and Garden PK13-14
Original price was: £7.99 – £49.99.£7.19 – £44.99Current price is: £7.19 – £44.99.
Boom Boom Spray by Biotabs
Original price was: £22.99 – £29.99.£20.69 – £26.99Current price is: £20.69 – £26.99.
Plagron Pure Zym 1 Litre
Original price was: £19.99.£17.99Current price is: £17.99.
Vitalink Chill 1 Litre
Original price was: £59.99.£53.99Current price is: £53.99.
Plagron Pure Zym 5 Litre
Original price was: £89.99.£80.99Current price is: £80.99.
Athena Fade
Original price was: £22.99 – £54.99.£20.69 – £49.49Current price is: £20.69 – £49.49.
Emerald Harvest Sturdy Stalk 950m
Original price was: £27.99.£25.19Current price is: £25.19.
Supreme Gardener Atlantic Fish
Original price was: £26.99 – £84.99.£24.29 – £76.49Current price is: £24.29 – £76.49.
RAW Yucca
Original price was: £1,009.99 – £1,699.99.£908.99 – £1,529.99Current price is: £908.99 – £1,529.99.
RAW Silica
Original price was: £16.99 – £849.99.£15.29 – £764.99Current price is: £15.29 – £764.99.
RAW Potassium
Original price was: £10.99 – £419.99.£9.89 – £377.99Current price is: £9.89 – £377.99.
RAW Phosphorus
Original price was: £10.99 – £419.99.£9.89 – £377.99Current price is: £9.89 – £377.99.
RAW ominA Amino Acids
Original price was: £21.99 – £899.99.£19.79 – £809.99Current price is: £19.79 – £809.99.
RAW Nitrogen
Original price was: £10.99 – £419.99.£9.89 – £377.99Current price is: £9.89 – £377.99.
RAW Humic Acid
Original price was: £16.99 – £847.99.£15.29 – £763.19Current price is: £15.29 – £763.19.
RAW Full Up
Original price was: £21.99 – £899.99.£19.79 – £809.99Current price is: £19.79 – £809.99.
RAW Enzymes (Tech Grade)
Original price was: £31.99 – £1,669.99.£28.79 – £1,502.99Current price is: £28.79 – £1,502.99.
RAW Cane Molasses
Original price was: £13.99 – £484.99.£12.59 – £436.49Current price is: £12.59 – £436.49.
RAW Calcium Magnesium
Original price was: £13.99 – £484.99.£12.59 – £436.49Current price is: £12.59 – £436.49.
RAW B-Vitamin
Original price was: £18.99 – £899.99.£17.09 – £809.99Current price is: £17.09 – £809.99.
RAW Amino Acid(Tech Grade)
Original price was: £24.99 – £1,334.99.£22.49 – £1,201.49Current price is: £22.49 – £1,201.49.
Plagron Power Buds
Original price was: £17.99 – £169.99.£16.19 – £152.99Current price is: £16.19 – £152.99.
Ecolizer Top Up – Flowering Stimulator
Original price was: £64.99 – £249.99.£58.49 – £224.99Current price is: £58.49 – £224.99.
Alien Root Rot X 5 Litre
Original price was: £69.99.£62.99Current price is: £62.99.
Atami Rokzbastic
Original price was: £55.99 – £549.99.£50.39 – £494.99Current price is: £50.39 – £494.99.
Bio Nova Vitasol
Original price was: £19.99 – £69.99.£17.99 – £62.99Current price is: £17.99 – £62.99.
Ionic Cal-Mag Pro 1 Litre
Original price was: £17.99.£16.19Current price is: £16.19.
Ferro Biocrop
Original price was: £89.99 – £159.99.£80.99 – £143.99Current price is: £80.99 – £143.99.
C-Result – Natural Booster & Problem Solver
Original price was: £39.99 – £174.99.£35.99 – £157.49Current price is: £35.99 – £157.49.
Plant Magic Boosting Powder
Original price was: £4.99.£4.49Current price is: £4.49.
GHEDirect LTD, 
