Review on 🐠 Optimized for SEO: Deep Blue Professional ADB88700 Biomaxx Nano Aquarium Filter by Brooke Parker

This filter works very well in my 3.5 gallon Betta aquarium. It's adjustable and I set it to the lowest flow rate possible since cockfighters don't really like turbulent water. My betta fish is free to roam in the tank and doesn't seem to be affected by the currents the filter might create. It uses sponges instead of spare cartridges which I prefer. Beneficial insects accumulate on the filter material as well as in gravel and decorations. Every time you change a cartridge, you lose the beneficial bacteria it contains that help keep your aquarium healthy. The mechanical sponge (white) is easy to clean by rinsing it with the used aquarium water that you removed from the aquarium to rid it of dirt. You really don't have to do anything with the biological sponge (black). Only replace it if it completely breaks down. Never replace or clean both sponges at the same time. Beneficial bacteria help convert any ammonia from fish waste into nitrite, and then convert the nitrite into less toxic nitrate. The tank should have 0 ppm ammonia, 0 ppm nitrite and slightly elevated nitrate (less than 40 ppm, preferably 20 ppm). When in operation, it makes a quiet hum. I could see how this can bother people who are very sensitive to noise. I know Revain combines this with Deep Blue Nano Carbon cartridges. I think I would advise people not to buy them. They are not very suitable for this filter due to the way the sponges are constructed. I would return mine but that seems like a hassle. Every fish expert I've ever spoken to has said there's no need to have carbon in your filtration system anyway. As long as you do regular partial water changes like you should, your water shouldn't become cloudy or smelly. I've been using this filter for a few months now and haven't had any issues with cloudy or smelly water. I haven't tried it, but I think you could buy a small mesh bag and fill it with charcoal yourself. I think someone else might have mentioned this in a cartridge review. You can reshape it to fit this filter better than those carbon cartridges and not as expensive. I've seen these mesh bags and charcoal containers at Petco, so I think they're pretty easy to find. They are also likely to be sold on Revain. Carbon doesn't affect the levels of ammonia, nitrite, or nitrate, which are the things people should be most concerned about. It only removes minor elements that have no real impact on the health of your fish. However, it can help if you keep live plants in the aquarium. (Always remove the activated charcoal from the filter when you need to treat your fish. The activated charcoal will hold the medication and keep it out of your fish.)