Advice needed

[Delucia21]

First time grower ..all autos between 2 and 4 weeks old I'm I'm fox farm Of I have fed only RO water and a little cal mag last watering 3 days ago I tested run off and had a super high reading around 1800 plants seem happy and have started to really thicken up . Question is should I start feeding nutes or just water till that ppm reading comes down.? I have fox f trio on hand ready to go any advice would be appreciated check out photos and any critique or suggestions would help. this is my first grow and really want to learn this craft .

[gbauto]

The plants look quite happy.
I'm not a soil grower, so take this for what it's worth.
I'm not a fan of pre-charged media-it can make it difficult to adjust nutrient concentrations for a problem child.
I'm a hydro grower as well as dabbling in coco and I never measure runoff.
I set the ph and ec of my feedstock and that's what they get.
I will make adjustments based on what the plant is telling me, not some runoff measurement.

[MeEasy]

I would start feeding em I don't like deleting the soil and then feed. Here's the fox farm feeding schedule, when I was using it I would start feeding once my plants were at about 5 nodes high. The first of the trio is an organic food that gets the soil going and it's important to get it started imo. On this schedule the trio is the three green lines only