Pet Central recommends the Biocube magnet for cleaning curved aquarium corners such as in a Biocube.
($9.99 Incl. tax)
CoralifeDeep Six Hydrometer
The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Coralife's Hydrometer takes a true water sample at six inch depth. Easy to read and accurate, this specific grav
($13.99 Incl. tax)