Lowered height of light to stop seedlings stretching, also turned humidifier off as soil staying very moist, have barely watered this week once every 4 days, think the soil is absorbing water through the fabric pots from the humidifier. Clip on fan arriving tomorrow, as other fans a bit too powerful seedlings were starting to lean a little. No nutes other than root juice as biobizz allmix quite hot/nutrient rich to start with