Growth Technology Optimum is a two part hydroponic feed recommended for all systems and especially flood and drain, NFT and aeroponics.
Developed over 15 years by the UK-based company, Optimum is a two-part mineral-based feed available for either hard or soft water.
As with all of the Growth Technology nutrients, we recommend using Optimum with Ionic Boost to get the most from your plants.
In our experience, Optimum seems to work best with perlite or a perlite/coco mix, if you are using rockwool growing medium then it would be worthwhile looking at the Europonic feed.
If you want to use a root stim as well then we would suggest GT’s GreenFuse.
Please note that the price includes both parts, A and B, for either the ‘grow’ or ‘bloom’ nutrients. A 20 litre option is also available in store for £74.95.