During the last 2 weeks before harvest, it is advisable to water the plants without added fertilizers in order to obtain as pure of a final product as possible. Final Solution helps to decompose and remove the last residue of fertilizers in the growing media, and also works as a prevention of mould. Final Solution can be used with any kind of growing media as the only agent to be mixed in the water. .hb-qff .hb-qff-row { display: grid; grid-template-columns: 140px 1fr; gap: 14px; align-items: baseline; margin: 0 0 10px; } .hb-qff .hb-qff-row:last-child { margin-bottom: 0; } .hb-qff dt, .hb-qff dd { margin: 0; } @media (max-width: 480px) { .hb-qff .hb-qff-row { grid-template-columns: 1fr; gap: 3px; } } Quick Feed Facts THE HYDRO BROS Dilution / Dose 1ml per litre of plain, pH-balanced water — no other fertilisers in the mix. When To Use During the pre-harvest flush, starting 10–14 days out, used with every watering right through to harvest. Substrate Fit Works with any growing media — soil, coco or hydro — as the sole additive during the flush. Grower Notes Standalone in this range — no other Advanced Hydroponics of Holland Dutch Formula product in this batch to pair it with.