Hello Oscarman, I don't use a filter for this tank. It relies on a crappy protein skimmer (the airstone keeps getting algae on it) ,live rock, and a heater. The tank is now not so beautiful after Aptasia anemones overtook the tank
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The tank is made by cadlights and so was the lighting fixture. The corals and fish have all died except the clownfish (I added a Bangaii cardinalfish three months ago from now) and the small colony of zooanthids in the front.
RIP Anthelia, Montipora, and that Zooanthid colony I didn't really care about.