https://lagonia.org/categories/equipment/ Recent content in Equipment on Lagonia Hugo en-gb Wed, 08 Jul 2026 13:00:00 +0200 https://lagonia.org/posts/undergravel-filters/ Wed, 08 Jul 2026 13:00:00 +0200 https://lagonia.org/posts/undergravel-filters/ The contrarian case for under-gravel filters, why the brown gunk is beneficial biofilm not waste, how to run one properly, and the long-term test tank I am starting to prove it. https://lagonia.org/posts/aquarium-filtration/ Fri, 26 Jun 2026 10:00:00 +0200 https://lagonia.org/posts/aquarium-filtration/ What a filter really does (house bacteria), the three jobs of filtration, honest pros and cons of sponge, HOB, internal, canister and sump filters, which media matter, and why biofiltration, not volume, limits stocking.