got 4 plants between 6 and 8 tall they're bout 6-7 weeks old from seed. grown in en suite next to bedroom in normal conditions (normal lighting and usually the temp is between 16-21 deg c) tips of leaves are yellowy/brown and drying on the first sets of leaves but the rest of the plant looks happy. started using baby bio herb bout 3 weeks after seeds popped up but stopped wen i noticed the tips goin funny, been watering once every 2 days but only if soil on top is a bit dry. feed is 5-5-5 and used as it said on bottle. have only give em water for the past 2 weeks? im new at this it was just some seeds id collected over a few months so not even sure what they are?