I want to get started dosing some tried and true, proven, successful additives for both color and growth. I have looked into zeo quite a bit, and it seems to be very successful when done right, but it also looks like a lot of work. I'm running an ULNS with non detectable nitrates and phosphates. I know getting these levels up would help but I just cant get them above 0 (salifert test kits). What are you using as additives to help with color/ feeding?