Pete, why do you keep starting new threads for the same problem? You have been told almost everything that we as a community know about nitrates. I personally think that best thing that you could spend you next $100 on are a good stack of books and start reading. You obviously haven't been able to learn from us so maybe you can learn from reading. I have not had detectable nitrates ever since my tank was set up. You really need to quit relying on LFSs and relying on people who care and who have actually studied these things such as us again and notable authors. Here is the plain and simple truth:
-Tap water almost always has nitrates in it, especially in CA where they reinject sewerage discharge back into the water table.
-If you continue to use tap water for anything, I can guarentee you hair algea, cyano, and bubble alga in the next 6 months.
-You are better off spending the money for a sump on a RO/DI filter off of ebay. Hundreds of us have bought the unit from filtersdirect for about $100 and trust me/us it is the best investment you can get for your own sanity down the road.
-Feed lightly
-10 to 50 gallon tanks make great sumps and are a hell-of-a-lot cheaper than buying one from the LFS. Again, you are buying so he will sell it to you, no matter if you need it or not.
Keep coming back to RC, but listen to what you are told, especially when it is repeated. It is not fair to ocean going fish to be neglected due to ignorance. This is coming from a very conservative republican even.