Hi
No you dont need a reactor at all this is the beauty of the fauna range it is very flexible in its whole approach
Naturally to get the BEST performance then look at running the whole Ultra Lith system, but again you dont need the reactor you can use the media bags
but to start with I would suggest adding Min S to that list for sure.
Here you can find our manual for our balling light method to calcificate reef tanks. This kind of calcification is the most popular in germany and meanwhie more then 80 % of reefers use this method succesfully
http://www.faunamarin.de/bedienungsa...ethode_eng.pdf
I will be running a balling light tutorial thread with special guest Claude from Fauna Marin to answer all questions on this forum in a few days
