Those white clumps don't look normal to me, is it just an E&F setup? I had some whiteish stuff growing from some bad slime build up and they looked sorta like your plants above ground. Do you have standing water in your bins? Do you use H2O2? I'm only at the end of my second flower/3rd veg so I'm not a huge wealth of info yet, but I can try to help you out.

You should fill out the form and you'll probably get more answers from the vets. Worthless posts asking "What is your temp/ppm/system/nutes" etc. are what filling out the form eliminates.