I would advise caution here: that soil you have looks very very nice, pity you didn't mix in some perlite, to avoid any chance of compaction later, and to dilute the further affects of early nute burn, which are naturally ...yellowing tips of major leaves, caution and be ready to flush with air temperate. Ph neutral water, 3 times the volume of the pot!Haven't added any nutes and the tips on the lowest set of leaves are starting to yellow. Just noticed it today it's 2-1/2 weeks old do I need to start feeding it or wait it out til the 3 week mark?
I had a rapidtest PH/fertility/ tester. Just make sure It's actually working right. After reading reviews on it I learned the reader is very screwy. Many customers were complaining about the meter always reading "7". I had the very same problem and ended up tossing it. Oh and make sure your using it as it says in the instructions. I'm pretty sure it tells you to mix your soil with a certain amount of water to make it soupy then dip the stick. Hope this helps. Good luck!The soil I'm using is just topsoil from menards no nutes from what the bag said and I did mix some perlite in it but didn't get enough. I have a rapitest ph/light/fertility/moisture tester and when I check it it's about 7 on ph and says very low fertility. This is why I thought maybe nitrogen def.