Watering cuttings "pls help"

ive got 30 clones sitting in a propergator tray. growing in 1in rockwool, under 2 x 24in florescent tubes. iam gonna use 3ml of formulex to a ltr of water.
this is a new project and i dont want to loose my new babies. iam afraid of over watering at this stage. before i transplant them to the 3in rockwool and their new nft ebb flow home.

go by weight and only water when about 50% of the wter is absorbed or evaporated

wot do you mean by weight.

feel them before watering and then after and when they feel like half the water is gone water them

lol.. mm i was a bit thick there i think..

thanks