) are small pumps that sit inside your tank simply to move water around. SW
tanks require a lot more water movement for the fish to feel like they are in a natural environment.
Protien Skimmers (PS) are devices that circulate millions of tiny bubbles in a swirling column of water. Small amounts of Disolved Organic Componds (DOC
) then attach themselves to the tiny bubbles which then rise to the top of the protien skimmer and are collected in a cup for disposal. This is the same foam you see washing up on the beach some times.
Hydrometers are simple tools used to measure the amount of salt in the water by measuring it's specific gravity (sg
For beginners to SW
a larger tank is much easier as the larger water volume gives a little more leway while learning good husbandry habbits.