As mentioned in an earlier thread, I've been considering dosing nitrate to my tank. Just a brief summary for those that haven't been following my fallow build thread. I have a ~110g DT with a 30g sump. I've been running a full zeovit system almost from the beginning, thus have had what is called an ultra-low nutrient system with undetectable nitrate and very low phosphate <0.03. I've been adding lots of zeo additives, which are supposed to put nutrients back into the tank for coral coloration and growth, and while I've gotten a fair amount of growth (for acropora this growth has so far manifested itself as encrustation, but my other SPS are growing nicely), the colors of my acropora are less than I would desire. I've been reading about nitrates and having a high nutrient tank within a ULNS, meaning lots of fish and coral feedings. In the past couple months I've added 9 new fish, including a total of 3 tangs and a 6 different anthias for a total of 15 fish, which I think is medium stocked. I've upped my feeding to 1.5 cubes of mysis per day, about 3 small sheets of nori per day (about 4x6 inches), pellets through autofeeder 3x/day, and 1 teaspoon of reef-roids/reef frenzy in the morning and 1 teaspoon of oyster/roti feast in the evening. After doing this for about 2 weeks, my nitrate reading (red sea pro) has come up to 1, and my phosphate is 0.07 (Hanna phosphorus). On top of that I have been dosing the usual zeovit additives, such as Xtra, coral vitalizer, amino acids HC and LPS, K-balance, sponge power, etc. I know that my goals seem to be contradicting -- running a zeovit tank and trying to increase my nutrients. But I still see value in the zeovit stones and what is basically carbon dosing with bacterial supplements. The zeovit additives are less effective in a more nutrient rich tank, but I'll continue to use them for now and see where it goes. I've already the flow through my zeovit reactor down to the minimum for my tank volume, and have decreased my carbon dosing through zeostart3 by 1/3. My goal is to increase the nitrate levels to 5 using KNO3 powder from Green Leaf Aquariums. Actual dosing details to follow; hoping to get to the point where I dose daily using a dosing pump. I'm going to slowly dose up to 5, and start using GFO either in a bag or in a reactor to keep my phosphate <0.05, ideally <0.03. Let me submit as specimens which we can use as baseline photos: Strawberry Shortcake Green Slimmer Teal Sarmentosa Pink Lemonade I'll update once I get Nitrate up to 5ppm, and will take photos on some sort of time scale. Maybe every few weeks?