I haven't done so and I'm only in week one of edge I've been seeing a lot of YouTube videos showing a regular plane pH water feeding in between nutrient feeds... Is this needed? Im growing in Rockwool by method of drain to waste
in rockwool drain to waste you must give nutrient at each watering
if people say that you have to give water every 3 or 4 feeds then they are overfertilizing their rockwool block and creating salts accumulation
that they are forced to dilute with periodic water only feeds ..
just stay around 1.2 mS at start and check the runoff after each watering or with a siringe by taking some liquid in the cube
you want runoff EC= feed EC
if you are in the sweet spot the ph of the runoff will be slightly mless acidic than the ph of the feed .. thats a good sign
ex : ph feed=5.5
ph runoff=5.8
good