What to look for on the hydro shop shelf & surprising microgreens findings

Dr. Russell Sharp revisits fertilizer and biostimulant preservation—what shrinking, bloating, and floaty bits in bottles actually mean—and shares practical signs to watch for. He then summarizes microgreen experiments: pea shoots performed well without fertiliser or growing media, wheatgrass responded strongly to low-dose feeding, and ongoing trials include spring onions and a seed coating to deter slugs. https://eutrema.co.uk/shop/biostimulants/potassium-silicate-20-litres/