Hi, I have a dinafem Blue Hash strain at 5 weeks veg and is topped as well. I use a 400w hps on a 18/6 light cycle. I use FFOF soil and Fox Farm nutes. I water every 3-4 days. However the stems look very droopy as well as red towards the end of each light cycle but stick back up after the dark cycle. Any ideas what is causing this? What can I do to fix it?