Ok starting what i see, i see small, yellowgreen seedlings,with very close together nodes. looking not so happy. Automaticplants have sensible roots, packing them into rockwool cubes may be the first mistake. Rockwool is tvery dense for the roots to break through, they like it easy with no barrier. If they meet an barrier, they may stop to grow, in worst case start to flower.I dont know what soilyou are uisng so i cant say anything to the feeding. but as if they are yellow in an big pot full of nutrients they having aproblem to get the nutes( wrong PH?). Automatic plants have a small window where the decision fall if they get big and healthy or not . that window is in the first 3 Weeks. I dont think they will be huge. And i wont top them the way the grow works, they are growing to slow for topping. Most plants respond very well to LST
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