Wow. A quiet One 1200. That is a little pump. Its maximum flow is 296 GPH (gallons per hour), with a head cutoff to zero flow at 6.1 ft. That really doesn't give you much to work with. You have at least 4 ft of head to pump against (height from center of pump outlet to the highest piece of your plumbing) plus the head equivalenvy of your pipe, valve, fittings and tubing, which theoretically is around another 1 and 1/2 ft. Your going to be lucky to get about 1.5 to 2 gallons per minute out of that pump given the height of your tank and stand and the friction losses. Even then your velocity will be at less than 1 foot per second (and you want around 4 ft/sec). Basically you will be getting less flow and velocity from this pump arrangement than a Maxi-Jet 600 power head at about 6 times the electrical cost per hour and half again more the purchase price. I personally would recommend you upgrade to a larger pump. I would suggest, if you are also going to use power heads, that you get a pump rated at around 600 to 650 gallons per hour as with losses due to head and friction losses you will get closer to a 525 to 600 gallons per hour output. Even larger would not be a bad idea. Running half your turn over through a sump is quite acceptable (550 gph), but larger flow than that would be pretty heavy through a refugium. The problem with pumps smaller than 600 -700 gph, is that is they do not pump to heights, and every bend, fitting, valve and constriction increases your head height. Look for a pump with a maximum head of around 10 foot or higher or you will loose nearly all your pumps capacity to get barely any water. I do not think anyone wants an explanation of pump curve charts her, so you will have to take my word for what I am saying or don't. As for recommended pump sizes for your setup; with the Quiet One brand I would do a minimum increase to a Model 3000, Mag Drive a Model MD 7, Enheim a Model 1260, Ocean Runner a Model 3500, Little Giant a Model 3-MDQ-SC, Gen-X a Model PCX-30.
Your Quiet One pump will be large enough for an in-feed pump on a skimmer big enough for up to about a 100 gallon tank, so all is not lost.
Sorry I can not be more helpful.