Hi all, what is your opinion on using 20-25 TDS rodi water for mixing and top off? I KNOW 0 TDS IS BEST. Curious if anyone is using around 20 TDS and hasn't noticed any negative side effects. Right now I am running a FOWLR system with corals possibly coming later down the line. I have only used 0 TDS rodi in my past tanks, I am just curious if anyone has or is using around 20ish TDS water with success. Please let me know your experiences with this, thanks