I'm just going to add a couple comments.
When folks say not to "waste money on argonite sand" they are refering to wasting money on the $25 for a 10 pound bag of CarbiSea argonite sand. It is GROSLY overpriced, it's just sand. Argonite sand, if you can get it, is IMO
the best substrate you can have in a SW
aquarium. It is what you find on the ocean floor. It provides Ph buffering for you aquarium. It's soft edged and varied size grains provide a haven for substrate fauna (which you want and need), and it just looks good to boot
you can get cheap argonite sand from many walmart and Home Depot Stores. You looking for a 50 pound bag of "Old Castle", "Yard Right" or "Southdown" Play Sand. (See This thread
for much of the discussion, microscopic comparisons of the sand, and locations of stores that folks have found the sand in)
, you should have sand in the tank for the cycle. The LR
and the LS
are what become your tanks biological filtration. You might as well build them both at the same time, otherwise you're simply prolonging your wait before the system is ready. An algae bloom is going to happen regardless. You typical clean-up crew of snails/starfish should handle most of it. No need for vacuming.