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Flush duration in DWC
Cremostarted grow question 4 years ago
Okay, so here's the deal. A lot of people say that flushing should take a week or two. BUT flushing DWC could take only as little as 2 days. Is that true or does the medium really not matter at all? THX :)
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motaman311answered grow question 4 years ago
I've gone 0 days to a week for my flush and really don't notice much of a difference. Some plants I've given a longer flush don't burn as white as others with a shorter flush.
I found it is more important to lower the feed (EC .6/7 and lower) the last 10 days or so.
I like to do 2-4 days for my flush. The plants I have in flower now I am going to do 2 res changes of new water and see if that makes a difference.
good luck.
rhodes68answered grow question 4 years ago
Medium matters
Soil is slowest if flushing mineral salts simply due to being able to move less water through it. A week to 2 common.
Coco is a bit faster being hydro prob 1/2 the time for soil, Four to seven days.
DWC yeah 2 days should do it
Use of a flushing agent will speed things up
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