no additives just food?

[JGoslee]

I found your article very informative but I have a few questions.I currently have a 10 gallon.It is filtered by a tetratech150 and a rio 50 powerhead,lighting cosists of 39watts of PC.The only inhabitants are 4 hermit crabs,3 snails,and a peppermint shrimp.There is 12 pounds of fiji live rock and 10 pounds of live sand.In the future I plan on getting some low light corals.My questions are.Do I need to add anything to my tank but food?I test for ph,trite,trate,ammonia, do I need to test for anything else?Thank you in advance for any anwsers.

 

[rshimek]

Hi,

You will need to add calcium and probably spend some effort balancing calcium and alkalinity, but you certainly don't need to add any additives.