ハッパ grow

Konbanwa! It is the second week for the big plant and the first week for the small girls. I solved the issue - "what was wrong with them" - HUMIDITY. if u take a look at the first week, u can see a big difference. So I give them around 250ml-500ml of pure water. I spray them before sleep with magnesium water. No fertilizers till the end of 3rd week at least. Now the only issue I have, is that at night temp at some moment of time falls to 18. but I believe that it happens not longer than one hour. Is it me or they are a little bit pale? I don't know.