1. Nope. It's all up to you
Instant Ocean, Oceanic, Reef Crystals, are just a few, and probably the most popular three. If you don't have a LFS
to buy supplies from, you may want to check out DrsFostersmith.com. It is my understanding that they do NOT charge enormous prices for shipping. Roka64 just ordered a BUNCH of stuff from them, I believe, at very very little shipping. They may be a way to go with sand too.
2. Unfortanetly, there isn't really anything you can just add to the water to make it safe. Check out drsfostersmith.com first. You can also look into different bags of pool filter sand. It's usually browner in color, but it's cheap.
3. Sorry, I don' tknow of any baserock retailers. But, in a tank that size, I would also use the dead shrimp cycling method, in addition to adding the live rock. Throw a dead (or 2, or 3) raw shrimp in the tank, and let it rot. This will also produce enough ammonia to get your cycle going. I just don't think that little liverock will do anything at all in a 135.
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