There are, however, a few things that almost all blackwater aquariums have in common.
The species of fish for a blackwater aquarium should be carefully researched beforehand, especially if you are recreating a specific habitat and only want to keep fish that naturally occur there.
Low light plant species like Anubias, Java fern, and Amazon sword will do well in a blackwater aquarium. Floating plants like Amazon frogbit can really help create a natural look with its long, flowing roots.
3 oz. Black silicone aquarium sealant
Imagitarium Black Aquarium Sand | Petco
There are many different blackwater biotopes that can be recreated in an aquarium; even if you’re not interested in copying nature exactly, you can still produce a wonderful aquascape by combining different elements. The best combination of nine fish in an aquarium is eight goldfish or Arrowana fish (often referred to as a dragon fish and is best used in a koi pond due to grown size of over four feet) and one black-colored goldfish (black moor). When setting up your own blackwater aquarium, there are three things to think about beforehand: water chemistry, fish/inverts, and plants/decorations.In natural outdoor habitat, the Black Moor doesn’t do so great feeding because of it’s poor eye-sight. It is tough to find food when you can’t see that great. Just another reason why these fish thrive in aquarium habitats where the food can be handed right in front of them by their generous owners. They are sometimes fish but do best in aquariums. The feng shui lucky number of fish in a tank or aquarium varies depending on your personal flying star chart and of course, the size of the fish tank. The simplest rule is to have eight goldfish and one black goldfish. I'm fairly new here and still learning, but as to most people, we all have priorities in life and time/money is not always readily to available for spending. However, our love for the hobby enables us to miraclously find ways to still enjoy the hobby without compromises to our lifestyle. This can definately put a strain on families if not careful. So I thought it would be a great idea to create this thread and share my experiences with one of the alternative to the lesser expensive substrate which is the blasting grit "sand" made by Black Diamond. It's really coal slag but 100% safe in aquariums, there are a few folks here that use them successfully. With just flourish root tabs, the Black Diamond "sand" and of course the usual maintenance, they are able to have beautiful tanks.