Iv gathered that I make sure to discard my run off straight away as I’m using bottled mineral water and just adjusting ph as necessary I’m mixing a 5L drum of feed up and using that twice a day till gone working out how much there drinking will be fine in like 3 days or so is it going to be okay to sit for 3 days checking ph before each feed wrapped the bottle on black bag to avoid sun penetrating the bottleYes it’ll be fine. And not letting them sit in the run off is vital as well or you will have another set of problems really quick.