1st LED grow, 2nd grow ever! RQS Auto's

Changed nutes to flo, added Sugar Royal and Pure Zyme, Light stress under controll now, girls are all flowering but still no sign of trichomes, thus I introduced 15W UV light, its not a grow light but a party light and I have no idea about spectrum etc. all I know its surely not UV-C and plants tolerate it nicely. Green Gelato went flowering 2nd and Zweet ZZ is last to flower and streaching like crazy after I put the lights higher... Perks of growing different strains in same box XD. Had to level the plants a bit as Sherbet is really high and has very hard stalks that dont bend at all trying to LST her ended up in reaking the stalk a bit so I stoped stressing her more and gave up in LST. On the other hand Gelato after FIM is about 15cm smaller and needed to be put higher to even the level, I used a Xmass tree stand XD gave one to ZZ also but imidiately got light stressed so I put her lower again. Also gave them a little CO2 boost with a water+sugar+yeast in a bottle filtered through water pipe for brewing.