IF YOU ARE A SALTWATER ENTHUSIAST currently maintaining a reef setup, one of the best ways to enhance natural filtration is to employ a refugium.
Refugiums, small aquariums that are either near to or attached to your main setup (hang on), typically employ macroalgae, live rock, and live sand (or some combination of the three) to offer an ideal natural solution for enhancing and maintaining healthy conditions in an existing aquarium.
To fully benefit from your refugium, you will need to provide it with a lighting source. There
are several lighting options to consider:
A simple lighting option is to use a strip light with appropriate bulbs. A 6,000°K-10,000°K daylight bulb should provide sufficient light to grow your macroalgae population, but you may wish to opt for a higher color temperature in order to match the light output and color display of your main tank.
A more trendy choice may be to utilize an
LED fixture. The added benefit of using these fixtures is that they last longer, have an adjustable length, and best of all, the bulbs never need replacing.