Cal-Mag is a staple in any DWC setup, HydroGuard I have my doubts about... (will not use next run, replace fully with Orca)
Silica Blast tho... WHOO!! Plants love it.
The pH Perfect line is exactly that - perfect! I may give the connoisseur line a go next when these bottles finish.
B-52 - DO NOT use per instructions in DWC! I had it cling to everything.. I dropped the ratio down 1:3 and things were fine.
VoodooJuice - only used in the beginning, def helps with roots.