Final flush

Personally, I don’t do a hard flush where I just feed water for a week or so like a lot of folks do. I’m usually in soilless or DWC- so about 5-7 days from anticipated chop I’ll slowly taper the EC down. If I’m at 1.5 that first day, I’ll feed 1.2 EC, then 1.0, all the way down to 0.5 or so.. for a couple days and hope I’m seeing the fade I want around that point and then I’ll chop. If you’re just gonna feed straight water id only do it for 3-5 days in a hydro set up like you have. But you should easily be able to get down to getting the same EC from the water you’re putting in as you get out - within those 3 days. I guess it depends what kind of feed schedule you have tho. Hope this helped!