GH Flora Nova Bloom in DWC - continual problems

Hello all. I've been using Flora Nova Bloom for DWC plants for about 6 months now. Nothing but continual problems.
The first problems I attributed to my old bottle of Flora Nova turning sour on me (it was 2 years old and was stored outside for too long).
I'm now on a second, new bottle. However, I am continually running into problems. The Flora Nova continually sinks to the bottom of my DWC tub - even after a vigorous shaking. Also, the plants just don't seem to be growing. Any new roots quickly rot, and the plants don't seem to be happy at all.
I've read several posts online regarding GE's Flora Nova. There seems to be quite a polarity...either people love it or have problems like mine.

Having said that, I would like to ask if anyone else has experience with Flora Nova Veg/Bloom in DWC?

Thanks

yes, I have had good results with this line of nutes. Root rot is usually caused by high water temperatures...that or you have no bubbles in your rez or insufficient bubbles aka dissolved oxygen. You can burn roots with 2 much nutes, but thats pretty hard to do. The nutes should not sink to the bottom of your rez. I have never had that problem even in rez with just 1 weak airstone to move the water around a bit.

For a more specific diagnosis you will need to give us more information and pictures: ph, EC, changes in EC, temps etc.

dont use organics for DWC, I think is a fairly solid rule