Established hydroponic nutrient that started life in Holland but is now made by Growth Technology in the UK.
Our understanding is that it's very similar to GT's Optimum nutrient - feedback from customers suggest that it works very well in re-circulating NFT systems such as the black tank systems.
Greenhaze Grow 5 Litre
Greenhaze Bloom 1 Litre
Greenhaze Bloom 5 Litre