Wavemakers: Worth It in a Freshwater Tank
Pulsed flow was invented to imitate wave surge over a reef, and no freshwater habitat a hobby fish comes from has waves.
powerheads
3 guides
Powerhead Placement to Clear Dead Spots
Aiming a powerhead at the debris pile scatters it for twenty minutes, while aiming it to close the circulation loop clears it...
Water Movement: Sizing Pumps and Powerheads
Turnover figures alone will not tell you what pump a tank needs, because a cube and a long tank behave nothing alike.