I had originally not been having luck with zoas when I started. But, I had the SPS mindset from previous experience where I was dosing carbon and keeping a very low nutrient tank. I got a case of the dinos and allowed my nitrates and Phosphates to climb (Nitrates 10-20ppm and Po4 .1-.03ppm). I started to see a lot of new growth especially after the Dino issue was dealt with. So, I've allowed my nutrients to stay up. I have no proof and it may all be incidental, but I also started dosing Lugol's and have seen great results.
This is my weekly routine...
Sunday - water change, Dose Lugol's, Dose Cheatogro (Brightwell), feed Reef Roids
Thursday - dose Vibrant (Underwater Creations Inc), Feed Reef Roids
Everyday feed fish and dump the cloudy water into the tank, might even blow it on the Palys
I think the main thing is consistency. This is just where my tank levels out naturally and I'm not fighting it. If the nutrients where lower or higher and I wasn't having issues I would just keep it there. I also think my tank being 1.5yrs old helps a lot as it has found a balance. This is only a 13.5g tank and I just run GAC and a small refugium.