Is a skimmer needed ?

I do not have a skimmer and my 'trates are un-measurable but I am not going to knock skimmers. They can take a lot of crud out of the water.

Without a skimmer I rely a lot on the cheato in my fuge. I have two 15 watt halogen lights on it and on the occasion that one of the lights burned out over my fuge, in 24 to 48 hours I began to see the corals start to get a bit bleachy. I keep backup cheato in a separate FOWLR tank.
 
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