PurpleUp, 16 oz. skimmer polyps are inside and color

polyps are inside and color is light without depth and saturation

NOT Egg crate but made from injection molded aquarium grade ABS plastic it will never harm your reef or it’s inhabitants

or wet/dry filters

Then place fish back into the tank

PurpleUp, 16 oz. skimmer polyps are inside and colorPURPLEUP Coralline Algae Growth Supplement Non nutritive, no sugars, and no EDTA's PurpleUp uses a unique dual method approach to coralline algae acceleration. This approach is so unique that PurpleUp has been awarded a US patent (US patent No. 7,565,883). It contains ionic calcium; which immediately raises dissolved calcium levels in your aquarium water. At the same time Super Sea Calcium (a 10 micron aragonite powder derived from natural seawater)