I can't imagine any of them are worth the price. I've tried most salts now and you'll find that no matter where you go someone loves each one and someone hates each one, and everyone says to use what works best for your tank
I think that's the best answer. Try whatever you want to try and see if it works, but I think the tropic Marin stuff is WAY on the expensive side and can't see any reason that the bio actif could be worth that kind of cash. Maybe someone can tell us why it would be worth it.
Currently I'm using red sea coral pro... it leaves gunk and cakes when mixing, but honestly my reef has never looked better...
I've been through IO, reef crystals, brightwell neo marine, another fancy one I can't remember from the lfs, ESV multi part which mixes clean but is the biggest PITA ever. I would never touch it again it's such a pain to use and no matter how careful you are, you always end up with more of one component.....
I was going to try DD but it's the only salt I've read about that people have experienced cyano using... and Salinity I have read has crashed tanks (I'm not saying it does, just saying I've seen the comments)
from a cost perspective the levels in coralife are WAY better than most at a low price but I've never actually used it. Will probably try it next.
For what it's worth the Redsea coral pro is the only salt I've used that has seemed to make ANY noticeable positive impact.
If you try the tropic marin you might as well pay out for the crazy expensive stuff and see if it does anything, but for my money I'd try out Red Sea... just my personal experience
