I guess I'll be the first to answer. The carbon source is great, just use it in minimum amounts, less is more. The zeolite is nothing special. If I had it to do over again I wouldn't have wasted my money on a reactor and this includes my zeovit experiments.
I think the most important part is keeping your alkalinity in reasonable levels is more important than any other of the daily adjustments you can make. Be slow to change your alkalinity with sps. I've made the mistake twice and lost beautifull corals to changing things to fast. This goes without saying that it is expected to keep you calcium and Magnesium levels at proper levels.
As for the other aditives, vitamins, coral color, and trace, they are great products. I guess the best offering is experience and this requires a certain bit of failure to understand how things work. The brightwell products are as good as zeovit and less expensive, the rest is just knowledge. Don't follow the instructions on the label. Start small and move up, observing your corals as they change.
Back to the zeolites. The rocks are worthless. You can gain the same results if you have enough live rock. The secret is surface area and you could do that with bioballs. I know, they are suppose to absorb ammonia, and they do for a few hours and there dead. Don't waste your money. A good carbon source in the correct limitations is much more important.
Oh, one other thing, postassium. If there were a good way to read it, I'm sure it would be important. I've notices no good results or bad by adding it. The test kits suck, don't waste your money, I couldn't read mine. Reefkeeping can be a money pit if you have it to throw in. As for coral care, maintain appropriate levels without changing to suddenly. THE KEY!!!!!
