Vitamin C Dosing
This is another somewhat newer approach to carbon dosing. This approach is said to have really good effects on reducing nutrients but little impact on the coloring of SPS. Other soft corals such as zoanthids and some types of
leather corals will benefit from vitamin C dosing through increased: coloration, growth rates, and regeneration of damaged tissue. Based on what I have read, using a manufactured vitamin C supplement can help reduce the risk of over-dosing and will make the process a little easier. The link below is one example of a vitamin C supplement.
http://brightwellaquatics.com/products/vitamarinc.php
The below link will help you figure out dosing levels for your tank. If you are purchasing a vitamin C supplement, I would suggest following either the manufacture’s dosing instructions or the below link (whichever one is lower). I have been using a vitamin C supplement in combination with another form of carbon dosing for a few months now and I am very happy with the results. However, I am using just under ¼ of the recommended dose. I had a noticeable improvement with my zoas and leathers after a few weeks.
http://www.saltwatermasters.com/articles/Vitamin-C-Dosing
Benefits of choosing this method include: Lower risk method better suited for beginners
Drawbacks of this method include: limited impact or longer time to see results, long term studies are hard to come by.