Aquarium Calculator

Your heart relaxes when you read a clean zero from the test kit. You feed the fish, but one of them die with no apparent … Read more

Take that dissolved oxygen reading you read about in a tank… 7.2 milligrams per liter. Sounds good on paper, doesn’t it? Feels like its safe. … Read more

Oxygen dissolves in water more readily than the colder the water. I know you’ve heard it before. Hobby magazines say it. Science teachers tells their … Read more

You’re reading a 100 pound gauge on your CO2 regulator. Because needle hasn’t moved, you assume you have weeks of supply left. So you assume … Read more

The bubble counter is intriguing but also slightly suspect. With one click of the device, everything look fine. With the next tick, there might be … Read more

You can get a good sense for your tank’s pulse by watching CO2 bubbles ascend in a glass counter. A single bubble/second seem swift; two … Read more

When it comes to aquarium filters, most people think that bigger is better, if they throw extra filter media into their filters, their water will … Read more

An airlift is a quiet way to aerate an aquarium and also provide some water movement (good for sumps or breeding tank where a gentle … Read more

A common rule of thumb is that most aquarists begin with simple idea of buying a filter rated for the number of gallons they own. … Read more

I know you’ve wondered at times if your filtration is actualy filtering or just moving water around. If you care about GPH (gallons per hour) … Read more