how to add post harvest nutrients ? Brian how to add post harvest nutrients ?2016-11-08T04:21:57+00:00 post harvest nutrients Home › Forums › Growing Spirulina › how to add post harvest nutrients ? Tagged: post harvest nutrients This topic contains 4 replies, has 4 voices, and was last updated by sphyrna 3 weeks, 1 day ago. Log In Register Lost Password Author Posts November 8, 2016 at 4:21 am #2413 BrianParticipant Hello everyone, i was wondering how one would add the post harvest nutrients to the culture? Do you just add the nutrients to the filtrate and dump it back into the culture or discard the filtrate and prepare fresh medium? November 8, 2016 at 10:05 pm #2414 BrianParticipant anyone? November 9, 2016 at 1:13 pm #2415 SpiralOutParticipant i personally stir it with the filtrate and dump it back in… 🙂 June 21, 2017 at 3:47 am #2772 musicshahramParticipant I read somewhere you need to change water after six month , but before that add some nutrients to the previous water and reuse it .. This reply was modified 3 months ago by musicshahram. August 31, 2017 at 7:07 pm #2829 sphyrnaParticipant Hi. As far as I know, add N-P-K & Mg after harvest. I am using NPK-16/8/24 + mg + trace elements fertilizer after harvest. ( 0,6gr/lt). Author Posts Log In Register Lost Password You must be logged in to reply to this topic.