Ciao, I read your pH is 6.5 maybe you could try to correct it to 6.0/6.2 I think your leaves could have get that colour for this reason, about your leaves pointing down you're giving too much water or maybe your humidity is too low, I'm a newbie this is just what I think, I'm sure someone else will be able to understand what's going on better than me maybe, good luck with your grow amico :)