Aquariums

Cycling Pumps, Flow & Aeration Freshwater Aquariums Algae Water Quality Filtration & Filter Media Fish, Stocking & Compatibility Food & Nutrition Getting Started Saltwater & Reef Aquariums Equipment Maintenance Emergencies Plants Fish Health, Symptoms & Diseases Treatment & Quarantine

Topic	Replies	Views	Activity
What yearly sump-pump maintenance actually prevents failures? Maintenance routine , basement , sump-pump	1	1	September 15, 2026
The light is on a timer, but algae still exploded. What else controls it? Equipment freshwater , lighting	1	0	September 15, 2026
Will rinsing filter media in tap water crash the cycle? Filtration & Filter Media filter , ammonia	1	0	September 15, 2026
Which water tests matter in the first month, and which can wait? Getting Started planning , nitrite , ammonia	1	0	September 15, 2026
How should saltwater be mixed to a stable salinity for a first tank? Saltwater & Reef Aquariums planning , saltwater , salinity	1	0	September 15, 2026
When is a quarantine tank worth using for new fish? Treatment & Quarantine planning , freshwater , quarantine	1	0	September 15, 2026
How often should aquarium substrate be vacuumed? Maintenance freshwater , routine , nitrate	1	0	September 15, 2026
Fish are gasping at the surface. What should be checked before assuming disease? Fish Health, Symptoms & Diseases freshwater , emergency , gasping	1	0	September 15, 2026
Why does KH keep falling in a planted aquarium? Plants kh , plant-only , freshwater	1	0	September 15, 2026
Can tap water cause an ammonia reading even in a cycled tank? Water Quality ammonia , freshwater , water-change	1	0	September 15, 2026
The filter is running, but flow dropped. What should be checked first? Filtration & Filter Media filter , no-flow	1	1	September 15, 2026
The heater is on, but the aquarium will not hold temperature. What should be checked? Equipment freshwater , temperature , heater	1	0	September 15, 2026
Why did the aquarium turn cloudy after a water change? Water Quality freshwater , cloudy-water , water-change	1	0	September 15, 2026
What should be done for aquarium fish during a power outage? Emergencies emergency , temperature , air-pump	1	0	September 15, 2026
How much aquarium water should be changed, and how often? Maintenance freshwater , routine , nitrate	1	0	September 15, 2026
How much should aquarium fish be fed each day? Food & Nutrition ammonia , freshwater , routine	1	0	September 15, 2026
When can a betta share a community tank, and when does that fail? Fish, Stocking & Compatibility planning , freshwater , betta	1	0	September 15, 2026
How can you tell if a community tank is overstocked? Fish, Stocking & Compatibility planning , routine , freshwater	1	0	September 15, 2026
Brown dust on new aquarium glass — is that a cycling failure? Algae routine , freshwater	1	0	September 15, 2026
Why is aquarium water green, and what should be tried first? Algae freshwater , lighting , cloudy-water	1	0	September 15, 2026
What does a low-tech planted tank need besides a filter? Plants freshwater , plant-only , lighting	1	0	September 15, 2026
What is the difference between an air pump, a powerhead and a return pump? Pumps, Flow & Aeration circulation-pump , air-pump , return-pump	1	0	September 15, 2026
Is an air stone still useful if the filter already moves the surface? Pumps, Flow & Aeration freshwater , air-pump , temperature	1	0	September 15, 2026
How much flow does a typical freshwater community aquarium need? Pumps, Flow & Aeration freshwater , circulation-pump	1	1	September 15, 2026
What order should filter media go in, and what is safe to rinse? Filtration & Filter Media freshwater , filter	1	0	September 15, 2026
How should filtration be chosen for a 40-gallon community tank? Filtration & Filter Media filter , hang-on-back , canister	1	0	September 15, 2026
What do pH, KH and GH actually tell you in a freshwater tank? Water Quality ph , kh , gh	1	0	September 15, 2026
What should you check if nitrite stays high during cycling? Cycling freshwater , nitrite	1	0	September 15, 2026
Why can ammonia spike right after fish are added? Water Quality freshwater , ammonia , emergency	1	0	September 15, 2026
How do you know a fishless cycle is finished? Cycling freshwater , ammonia , nitrite	1	1	September 15, 2026