I do a 10% water change every sunday. I have checked water amonia 0.00, nitrite 0.00, nitrate 10, ph 8.3, salanity 1.022, calcium 400, phosphate 0.25. I feed frozen clams, brine, mysis, emrald delight, bllod worms, beefheart, and flake, I soak in zoe,zoecon and garlic switch alternate soaks every day.