The great thing about a scrubber is that it grows exactly what many fish eat naturally. Even fish that you think would not eat algae, such as some cichlids, will do so if the growth is living. But many freshwater and saltwater fish and other animals love it. Green...

Now for nutrients. Nutrients are defined as inorganics, not organics. The word "nutrient" is sometimes confused with "nutrition", and maybe in restaurants the words might mean the same thing, but for aquarists they are totally different. Nutrition food particles are...

Now for some basic differences: The first and maybe most important difference is that chaeto reactors grow only in saltwater (fish only, fish with live rock, or reef) whereas algae scrubbers grow (filter) in both saltwater and freshwater. Growing = filtering. But even...

All macroalgae operate the same, chemically. They all use light photosynthetically, absorb nutrients from the water (i.e., filtering), and grow biomass. Just like trees. The differences between types of macroalgae are in the physical structure of the macroalgae growth...