When to move rockwool seedlings to dutch buckets

[gdgdad]

Stan – keeping you posted. The Hydroton arrived and I’ve carefully added it to the net cups (see pics). After THOROUGHLY rinsing pebbles, I first filled the gaps (left via putting a square cube in round net cup) with small pebbles, then used larger pebbles to fill in and prop up seedlings. All 3 of the seeds started on 10/11 are sprouting, one just over a half in high. On the “new” seedling cups, I only placed Hydroton on the perimeter, mainly to block light. Tallest seedling is about 3 ½“ high, but still no roots out of the cube yet. To me it looks "leggy", but there are true leaves. When (i.e. in height or time) would you expect I’d see roots protruding from cubes? Everything else remains the same, i.e. bucket is kept in shade on lanai within10 feet of direct sunlight, watering is 7am, 7pm, and 1am for 1 minute. Temps running upper 80's with humidity in the low to mid 70's. Thanks again for your advice and direction..... fingers crossed!