Heart Urchin Heaters use the 100 micron version

use the 100 micron version

20 inch reach helps access aquarium areas that are difficult to reach by hand

and install the replacement head securely

It may hide under rocks for much of the day but will emerge at night time or when hungry

and display viewing

Heart Urchin Heaters use the 100 micron versionUrchins have sharp teeth at their center which they use to scrape algae, including coralline algae. They are able to scratch acrylic so are recommended only for glass aquariums. Echinoderms such as urchins are extremely sensitive to changes in the water quality. They require well established aquariums for both water stability and sufficient food supply. This unique urchin has long, hair like spines and spends its days underneath the sand helping to