Hossain - Aquarium Answers

Green Spot Algae on Aquarium Glass: Causes and Removal

Hard green dots on the glass are usually a light and low-phosphate problem, not a dirty tank. How to remove it safely, including on acrylic.

Why black beard algae appears where it does, what slows it down in a low-tech tank, and why we will not publish a chemical dosing rate.

Brown dust coating a new tank is a diatom phase, not a mistake. How to identify it, what actually shortens it, and the cleanup crew mistake to avoid.

Green water is free-floating algae, so surface scrubbing and water changes fail. What works, why, and the trade-offs of UV and blackouts.

A tank that was clear last week and hazy today has a trigger. Work backward through the last ten days, and separate a bloom from suspended debris.

Fish vets exist and most keepers never consider them. Here is when the threshold is crossed, how to find one, and what to have ready first.

Milky water in a new tank is usually a harmless bacterial bloom that clears itself. How to tell which kind of cloudy you have, and what not to do.

When you cannot name the problem yet, the order matters more than the answer. Stabilize, test, inspect, observe, then route to the right guide.

Increase surface movement first, then test. Two different problems look identical here, and only one of them is fixed by adding more air.