https://aquariumtested.comAquarium equipment guides: tanks and stands, canister, HOB and sponge filters, heaters, planted and reef lighting, protein skimmers, test kits and aquascaping, sized to your tank and livestock.en-us https://aquariumtested.com/guides/aquarium-filter-types-and-sizinghttps://aquariumtested.com/guides/aquarium-filter-types-and-sizingChoose an aquarium filter: hang-on-back, canister, sponge, internal and sump filters, how to size by turnover, mechanical, biological and chemical media.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/aquarium-heater-size-guidehttps://aquariumtested.com/guides/aquarium-heater-size-guideSize an aquarium heater: watts per gallon by room temperature, one heater vs two, external controllers, placement, guards and how to avoid overheating.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/aquarium-nitrogen-cycle-guidehttps://aquariumtested.com/guides/aquarium-nitrogen-cycle-guideHow to cycle a new aquarium: ammonia to nitrite to nitrate, fishless cycling, the test kits you need, how long it takes, and how to know it is finished.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/aquascaping-substrate-and-co2-basicshttps://aquariumtested.com/guides/aquascaping-substrate-and-co2-basicsStart a planted aquascape: aqua soil vs inert substrate, depth, hardscape stone and wood, when to add pressurized CO2, and plants for beginners.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/freshwater-vs-saltwater-aquarium-costhttps://aquariumtested.com/guides/freshwater-vs-saltwater-aquarium-costFreshwater vs saltwater and reef aquariums compared: equipment, startup cost, livestock prices, running costs, maintenance time and difficulty.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/planted-aquarium-lighting-guidehttps://aquariumtested.com/guides/planted-aquarium-lighting-guideChoose planted aquarium lights: PAR for low, medium and high-light plants, spectrum, depth, dimming and photoperiod, balanced with CO2 to limit algae.Fri, 06 Nov 2026 00:00:00 GMT https://aquariumtested.com/guides/reef-tank-water-parametershttps://aquariumtested.com/guides/reef-tank-water-parametersReef aquarium water parameters: salinity, temperature, alkalinity, calcium, magnesium, nitrate and phosphate ranges, testing frequency and why stability matters.Fri, 06 Nov 2026 00:00:00 GMT