I was sent this image today from a Tropic marin balling fan, had to post it as its so true. Balling was invented by Hans-Werner Balling so why would any 2 or 3 part system be better than Hans invention that has elements missing from the original recipe.
Hans-Werner Balling system is different in respect to the incorporation of the NACL free sea salt or the part C which contains everything in sea salt but no NACL and includes ALL 70 trace elements to maintain ionic balance, this is what differentiates systems. Aqua Digital personally feels any systems that do not incorporate this are not following the original system's design as invented by Hans-Werner and, in our opinion, really should not use the name "Balling".