well i have a 180 thats guna be mainly sps as of right now i only have 4 pieces and the rest are LPS softies and 3 clams
but anyways im waiting out a lil longer to add more sps since the tank is only like 5 weeks old but it never cycled cuz all the LR came from my 100 reef and same with half of the water all the sand i bougbht was LS as well
anyways i did a lot of research on what would be best for a 180 i considered such things as Flow, Lighting, Filtration, and Reactor
heres a list of what i have and it works great everything is running perfectly and all my corals and fish are doing awesome
180G Lee Mar Euro style flat polished clear view tank w center overflow and black back
36" sump has LR rubble and Macro algaes
160lbs LR
120lbs LS
18W Coralife turbo twist UV filter
ASM G-4 skimmer
Pan World 100px-x return pump from sump
MRC-CR2 Calcium Reactor with JBL dual guages and solenoid/bubble counter 10lb CO2 tank with a MAG 2 pump for Recirculation and Rio HF4 for the feed pump
the reactor is my favorite part of equipment it keeps the alk and CA so stable
Fluval 404 to run carbon and other media and also feeds my Via Aqua 1/2hp chiller
Closed loop system includes:
Sequence Reeflo Dart pump
Oceans Motion 4way version 3 to create random flow in the tank
omni-flex returns to allow for best position on flow
Lighting
2-250W DE HQI Helios 20K running off of PFO pendatns and ballasts
260W of mixed PC lighting
2 moonlights
( i know 2 MH's is a lil light for a 180 but it covers very well and all my corals and etc are doing great out here in so cali this tank already cost me $95 a month in electricity so i was saving there)
id deffinately rec a chiller thought the lights get hot!
heres a few pics