If you’re just getting into hydroponics, then Flairform Greendream is probably the easiest nutrient to get started with. It’s a one part nutrient, meaning that you don’t need to mix anything – you just add Greendream to water and you’re good to go. It’s available in GROW and BLOOM mixtures, so depending on what you’re growing you may need just the GROW formula, or your may need both. I use Flairform Greendream to grow super hot chilli peppers and I’ve only even used the GROW formula, and have had no problems getting my peppers to flower and germinate.
I’m using Greendream mostly in a DWC system, but have also used it in an airlift system with great results. I don’t even bother to check the pH – I use rain water from my tank, and have never had a problem with pH. Flairform Greendream is available in 1 litre and 5 litre bottles, and it goes a long way.