New here? Say hello and tell us about your tank!

Anything aquarium-related that doesn’t fit elsewhere.

Lighting, filtration, controllers, pumps, and more.

Need urgent help? Post here.

Freshwater beginner questions.

Substrates, lighting, and plant care.

Fish compatibility, stocking advice, and care.

African, South American, and other specialist setups.

Share experiences and raise healthy young fish.

Ask newbie marine questions, get simple answers.

Share your reef builds and progress pics.

Species-specific discussions and advice.

Get help balancing your reef chemistry.

Tank cycling, QT, maintenance, and more.

Sumps, lighting, frag racks—show your builds!