I would agree except i would switch nitrate and nitrite. Nitrite is much deadlier and you want to make sure that it is 0, like ammonia. Nitrate can be deadly in large quantities, so a low level is tolerable, and present in most tanks. The presence of nitrate will also increase algae growth and can negatively affect sps growth and coloration, though. Most people strive to keep nitrate as low as possible, but it is difficult to make it 0. Phosphate is similar to nitrate in that it is difficult to keep at 0. Phosphate isnt as deadly as the other compounds but it fuels algae growth and also has negative effects on SPS corals. Try to keep it as low as possible, but reaching 0 might be very difficult. HTH
