SAD Auto + NL Automatic - 1st Indoor

Hi everyone! Long time lurker, first-time poster here! :) Tired of the stresses of growing outdoors, I bought myself a 4/20 present this year and set up a Mars Hydro TS 1000 grow kit, thus I decided to start a grow diary to see what comes out of it and share it with the community here. I've been planting outdoors for about 10 years now and have little experience growing indoors, just enough from watching friends, reading, and a sub-optimal experiment I've done a while ago. Anyway, I was going to grow 4 S.A.D. Autos (Sweet Seeds), but two of them didn't make it. I had 2 NL Automatic (RQS) seeds germinating at the same time, just as a backup, and that truly came on handy, given the situation. The seeds were put on a wet paper towel on 4/22 and into their definitive pots (7 liters) on the 24th. Two days later they all came out and I have the seedlings now under the TS 1000 on a 20/4 schedule and giving them 6.3Ph plain water. The lamp is 70cm above the plants at 100% potency - about this, I'm not sure if the lamp isn't too high, still trying to figure it out, but I'll keep an eye on the stretching. And that's it for now. If anyone wants to share some tips or just leave a comment, feel free to do so. I'll appreciate it! Keep on growing! kharkivskyzo