John, thats about the same size pump I have for my one 100gal. tank, you might want to consider 1000gph to be safe.
Here's 2 test kits similar to the ones I use. Also besides ammonia, Nitrites and O2, keep an eye on the PH, I have to add small amounts of baking soda to the tank to keep the PH in range cause of low alkalinity.
http://www.petmountain.com/show_product/...utm_term=502167http://www.google.com/products/catalog?s...ed=0CCYQ8gIwAg#
