Whoa dude, this is scary stuff. You went from pH 8 to pH 4?

Please copy/paste this troubleshooting form to your next post and answer the questions as best you can. Any pictures you can provide will help also. http://boards.cannabis.com/plant-pro...ml#post2000155

In the meantime, I believe you have 2 distinct issues, first, your pH is way out of range, second, overnuting.

Post the form. Depending on how bad your plant looks/how long this has been going on, it should be easy to fix both problems and get you back on track.

I'll be online for a while so if you do the form now, I or someone else, will catch it quick, got it?