The Fluval Flex 15 Aquarium Kit is popular among aquarium lovers for its sleek design and good features. When talking about its actual usable volume, it's important to note that while it's marketed as a 15-gallon tank, the effective space you can use is a bit less. This is because part of the volume is taken up by the built-in filtration system and anything else you might add, like decorations or substrate.
If you're thinking about filtration, there's something to keep in mind. Our research shows that some folks are concerned about the strength of the water current from the filtration system. Certain fish, like bettas, can be sensitive to strong flow. A few tweaks can help with this. Some people have had success using foam pre-filters or spray bars to soften the pump's output, which makes the environment better for fish that like calmer waters.
Also, if you've got smaller fish or fry, there's a chance they might get pulled into the intake because of its strength. A common suggestion to prevent this is to wrap filter sponge blocks around the intake. This can protect your fish from getting sucked in and still keep the filtration system working efficiently.
Despite these considerations, the Fluval Flex still has a lot of fans, thanks to its modern look and ease of use. Making a couple of changes can really help, especially if you're keeping fish that like still water.
This way, you keep the tank looking great while ensuring a comfortable setup for your fish.
So, even though it's advertised as a 15-gallon tank, remember the actual usable space is a bit less due to internal components. Just keep that in mind when planning your tank setup.