Thanks Wayne for your supportive comments and recommended reading. I'll certainly find the books and try to avoid Salt water for dummies *crazysmil (it was $2)
I have come to SW from FW and am inexperienced, but enthusiastic and am doing as much research as I can. Most of the adivce I am collecting comes from the members at this site and not my lfs. If you can expound on the mistakes you say I'm making I would appreciate it. Apart from my use of tap water, and use of as little LR as is possible (both of which have been approved by member of this site - you nmight've met me here by a different name) and cannot think what you are refering to.
You do seem to know your stuff though, so if I can ask what advice you would give to help me with the progression of my tank (tank specs should be in my siggy), both if cost was no factor, and also if it was, I would be very keen to hear what you have to say. Perhaps in pm if not on this thread.
The following link is where a complete water change after the tank cycles was advised........
http://saltaquarium.about.com/cs/beginnerscorner/a/aa061703.htm .........which states "After the ammonia and nitrite levels drop to zero, as soon as possible or at least within 5 days, perform a complete water change."
Seemed funny to me, but then again made some sense seeing as the benefitial bacteria lives on the tank surfaces and not in the water.
Regarding the brown algae which is taking hold, I assume I'm right in saying that conducting water changes with distilled water will slowly erradicate the problem, so long as it is it which is causing the problem, and not the use of some playsand (which is silica free I believe). The setup came with 3 flouresent bulbs installed (havent checked the spectrum on these) and I added a regular 4 foot kitchen light tube in the remaining slot for more light. I've learned that the wrong kind of light may also cause brown algae to flourish.