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TL;DR: An aquarium return pump moves water from your sump back to the display tank. Choosing the right GPH rating, head pressure, and noise level is critical for a stable reef or planted system. This guide covers what to look for and which
TL;DR: An aquarium overflow box lets non-drilled tanks connect to a sump by siphoning water over the back glass, enabling the filtration capacity of a full sump system without drilling. This guide covers how overflow boxes work, how to prev
TL;DR: Aquarium biological media is the physical substrate where nitrifying and denitrifying bacteria colonize to process ammonia and nitrite. Surface area per liter, flow-through design, and media longevity determine filter performance far
The Fluval 207 is rated 206 GPH for tanks up to 45 gallons. Real-world flow is lower with hoses and media. Here is the media setup and 207 vs 307 difference.
