Add a liquid feed to the water for extra nutrition. Rinse sprouts well at least every 12 hours. Trays need careful spraying in the beginning as it washes away mould causing fungi, but try not to move sprouts around as they root. Once they re fixed immerse them in water for at least half a minute. Drain your sprouts well, standing water is a good way to encourage rot.
Harvest sprouts carefully by gently pulling ripe ones out from the rest.
This allows less developed ones to continue growing so you get several harvests of perfect sprouts. Store them in a plastic bag in a cool dark place, such as a fridge, and rinse them every 3 days or so. Most sprouts will keep at least a week like this and often longer. Best grown in open trays these are mostly eaten raw. Alfalfa means father of all foods in Arabic, a lovely mild taste means you can t grow enough.