Liquid karma and dwc

Apparently organic but my local hydro store owner said it be ok. When I cleaned reZ I had buildup on bottom. Is that just the karma?? Only other nuits used flora nova bloom and aqua shield and great white

Is the nova thick maybe its that i saw hydro hybrid on youtube mix it in a cup with water then add it to his res the flora nova. The karma is good stuff but i cant remember if it made a build up. I used flora series with hydro drip so i did get some clogs salt build up in the mister that drip .its been a while.