I use hydro cloning buckets to clone my babies, I have been using them for a few months.... now all the sudden they are dying before they are even rooting. I use a 5 gallon bucket, with thrive alive B1 and clonex for nutes I have the PH at 5.6 and then I changed it to 6.0 and they are STILL dying either way... I clean my buckets regulary, and they under 2 400watt lights in my veg room... I have NEVER had a problem until recently....I don't know what I am doing wrong!! PLEASE HELP ME!!