Right, you feed dwc plants by putting nutes into the res and then getting the ec up-too the amount you want yeah, 0.4 baby plants 1.3 normal size plants on so on' well what i was doing was getting a jug, putting 1ltr of water into that jug' then adding nutes untill i was getting an ec reading from that jug, then once i had an ec reading of 0.4 in the jug' then i'd put it into the res of my dwc, lol sorry if i confused you' i get abit jumbled up now and then'