Filters
Aquarium filters online in South Africa - sponge and hang-on-back filters for every tank size.
Aquarium filters online in South Africa - sponge and hang-on-back filters for every tank size.
As a rough starting point, look for a filter rated to turn over roughly 4-6 times your tank's water volume per hour - a bit less for a heavily-planted or shrimp/fry tank where you want gentler flow, a bit more for a heavily-stocked or messy-eating fish tank. Sponge filters are a good gentle option for shrimp, fry, and nano tanks; hang-on-back filters suit larger, more heavily stocked setups.