clone machines

I'm having a problem getting cuttings to root lately. I use an aeroponic cloner exactly like the one in the attachment, I've been using it for over a year with no problems, I previously had almost a 100% success rate. However these past few months I'm hard pressed to get anything to root. At...

Been using GH for a while decided to experiment with a different feed plan with the same 1-1-1 ratio for moms and recomended cutting feed from GH with Rapid start 2 tsp/g PH to 5.5-5.8. I have researched Dyna-Grow A LOT and decided to try it with my same feed ratio of about 1-1-1. Of course I...