also you may get high reading if there is something over the odds in your mix that will keep coming so just drop the water ph and flush them, if its running off high its running out, the most important thing is the plants, do they look happy, i never ph anymore as after 6 years i read, i use hard lime tap water sat for 48hrs! flush them and keep an eye on the plants, a little yellowing,discolour on a baby is not unusual, especially if soil is a mix with added nutes/booster as these can be a little stron, ive had worse lookers come out amazing, i still believe a little stress gives me a better plant, it always has with my rescued babies, from duc
klings to swans! flush then, check ph but most important is not what your meter reads, but what your plants are saying, to me they look no worse than alot of mine at seedling, a little washed out, but still green healthy and growing, just use ph water no matter what runoff is, keep it lower end of ph to help,they will get used to there envirment, u will be surprised what they will come back from, they are a hardy weed remember!!