I run carbon passively 24/7 with Triton alternative methods, as I did with Zeovit and every tank I’ve had, over the last 15 years, to me running carbon is to use a little bit (200g in 800L tank) in a bag and never in a reactor, I still just agitate the bag occasionally as zeo recommend, I’ve never experienced HLLE or water yellowing. I get regular ICp’s done and never register anything unexpected. Does it do any good? Tbh I don’t know.. does it do ny harm? Doesn’t appear to..