10 Best Small Aquariums in the Philippines 2025

If you’re new to fishkeeping, it’s best to go with a 10-gallon tank or larger. This gives your fish more space and provides better water stability, which helps reduce the risk of common beginner mistakes like ammonia spikes or rapid temperature changes. A 10-gallon tank also allows room for basic filtration and heating equipment, plus a few decorative elements.

If you already have some experience maintaining aquariums, a 5- to 10-gallon nano tank offers a more compact way to enjoy the hobby. These tanks are great for housing bettas or nano fish species, and they’re ideal for work desks, kitchen counters, or small apartments. Just make sure to monitor water quality regularly, as smaller volumes can change quickly.

If you want more space for aquascaping, community fish, or a mix of species, go for a 15- to 20-gallon tank. It’s still considered a small tank by most standards, but it gives you more creative freedom and room for equipment like internal filters or CO2 diffusers. These sizes also offer more stability and reduce stress for your aquatic pets.

Betta fish are often recommended for beginners because they can survive in lower-oxygen environments and small spaces. However, this has led to the misconception that they require minimal care. In reality, bettas need at least a 5-gallon tank—though 10 gallons is ideal for beginners. A larger tank provides better water quality, more space for enrichment, and is easier to maintain.

Bettas also require a heater and a gentle filter to thrive. They do best in tanks with gentle water flow, plenty of hiding spots, and warm water—ideally between 25–28°C. Avoid keeping bettas in unfiltered bowls or cramped containers, as poor water quality and limited space can quickly harm your fish.

Shrimp and snails are great choices for small, low-bioload tanks. They're fun to watch and help keep the tank clean. However, they’re very sensitive to water quality and temperature swings. Choose a 2.5- to 5-gallon tank with gentle filtration (like a sponge filter), live plants, and a stable temperature. Avoid aggressive tank mates that may nip or eat them.

Aquascaping lets you create a living underwater garden. For this, look for tanks with ultra-clear glass or seamless acrylic for better visibility. Choose cube or rimless tanks that offer an unobstructed view of your layout. Good lighting is essential for plant growth, and a slightly larger tank (like 10–20 gallons) will give you more creative flexibility.

Glass tanks are heavier but offer crisp clarity and are more scratch-resistant than acrylic. They’re a great choice if you want your aquarium to double as a stylish display in your living room or office. Just handle them with care during setup and cleaning, especially around the edges.

Acrylic tanks are lightweight, shatter-resistant, and easier to move—making them ideal for homes with kids or pets. They're less likely to break if bumped and are also great for renters or dorm dwellers. Just be careful when cleaning, as acrylic is prone to scratching.