ok would a glass holes overflow the 1500gph to a 55 gal sump were the drains would go through there own filter sock then i would hove wy suction line for the skimmer external pump plumbed over the side and i would add a baffled off are 14inch long and 13inch high area ( 1-12 1/2L by 13inch H pane of glass ) were ther would be a fuge with 5 inch DSB and claurpa and cheato. i would like to plumb the skimmer drain to fill this area intell if overflows back to the sumpwitch would be about 33'' L and 12''W(the remaing area of the 55 lol) i would say about half full. with a heater and a mag 12 return with a sea swirl on the oposite side from the overflow. i will be ordering 50lbs marco dry rock unless i can get cheaper dry rock from my LFS and picking up around 20-30 pounds cured live rock for the main tank and a 3'' sand bed for the main tank. Lighting 3x250watt MH 20k 4x24 watt T5HO 24inch in a retro hanging canopy. this will be a mixed reef with sps at the top, some monti's, assorted zoa's and palys at the bottom and som acan's and micro's and chalice's to fill in the open areas, and i will be getting a suncoral for the main cave of the aqauscape. the only livestock ive desided on is a pistal shrimp and watchman goby( might have to add 5 inch sand bed to DT tank as well) and 2 clowns unsure what type, a six line wrass, a firefish goby, and a powder blue tang, and maybe a couple others im sure a blenny or 2 and of corse a good clean up crew of course. this tank will not be filled untill all equipment and rock and plumbing is done it will go through a cycle im sure with alot of dry rock so i will wait a little while befor any sps frags are added but i will try to use alot of my old water but i will have to leave some because i plan on just moving my current 75 into another room lol i dont want to get rid of the lion. any suggestions would be great it will be a little while but i will take pics as the equipment gathers and things start to get put together and if this is in the wrong forum feel free to move it.