Sorry about the root rot probably temp. One thing is you don't mix the nutes by thier selves, they react and form crystals. Very,very bad. Mix micro first always to some water and stir, wait a few then add bloom. This may have been the start of the rot, nute lockout. H2O2 about a teaspoon per gallon or so, you can go a little more. Look up my thread on red hair ladies. You can cut the roots back to about 2 inches hanging in the water.