I am looking for suggestions on which test kits are best? I am getting ready to startup my new tank (215). I know I will need to test for Nitrites, Nitrates, Ammonia to start with...What else should I test for? I have been running a sml 30 gal for over 2 years and the only thing I check is salinity and pH. I haven't had any problems with it. Suggestions on specific brands will be helpful.