additives and supplements?

[Serra]

If I just have mushrooms and polyps in my tanks what additives would be beneficial to add to my tank?

 

[Travis L. Stevens]

If you are doing regular maintenance and water changes, you shouldn't have to add anything. If you had a tank filled to the brim with them, I would pay attention to Alkalinity to make sure that you have enough carbonate in your system as well as Iodine, Magnesium, and Strontium. But as long as you keep you Calcium, Alkalinity, and Magnesium in check, then you shouldn't have a problem with any of the rest.