Tropic Marin High Precision Hydrometer Covers Pseudochromis fridmani is a carnivore

Pseudochromis fridmani is a carnivore of worms and other small invertebrates

Rated for aquariums up to 240 gallons

If levels fall below these values

of all filtration media available anywhere

Tropic Marin High Precision Hydrometer Covers Pseudochromis fridmani is a carnivoreHigh Precision Tropic Marin Hydrometer High precision hydrometer for determining the specific gravity in aquariums Many tank inhabitants are sensitive even to minor changes of the water conditions. For an exact, reliable measure of the specific gravity, Tropic Marin offers a high precision instrument. The hydrometer is handmade and designed to float vertically in the water. The maximum deviation is about 0. 001 at 77 F (25 C). How to use: Float freely