do I still need filters like fluval 404s for the water flow
I would refrain form these.. If you have a sump you are going to need some sort of Overflow along with a Pump for inside the sump and some powerheads 4 maxi 1200s would be my choice .. My best suggestion is talk to Darin over at CaptiveReefs.com He is an Honest person and Easy to deal with.. He should be able to get you pretty well setup for equiptment..
I plan on buying around 250 lbs LR from liverocks.com
Perfect amount.... You will be happy..
enough LS to cover the bottem, so how much do I need
I would suggest getting some Southdown playsand from Home Depot or some sort of aragonite sand from the LFS
and seeding it with maybe 10lbs of LS
.. It will be much cheaper than 100% LS
.. For sand you are going to want probably about atleast 100#s of aragonite and max 10-15#s of LS
any more LS
than that is pretty much wasted.. Any sand that you have in your tank is going to be LS
in about a month.. Get 100#s of aragonite sand and go from there.. Depending on your looks and how much each hundred covers..
If you plan on having a Skimmer an AquaC Ev180 or EV240 would work awesome..