How to clean hard water stains in a fish tank without harming fish?

If it is on the glass, remove enough water to drop levels below the lotion and wipe with paper towels until clean. Avoid soaps or cleaners which can cause more harm to your fish than the lotion. Replace water with aged or conditioned water that is temperature matched to prevent further stress or shock. Use a fresh carbon filter insert to remove any residual lotion or chemicals. If the lotion is on tank furniture, remove and wash with a mild soap then rinse very well before returning it to the tank.

Not usually. If you have hard water, you can use a water conditioner or softener for water to use for water changes. A chunk of driftwood can also help soften the water if you don't mind a bit of discoloration. Use a soft bristled toothbrush to scrub off deposits.

Use a soft bristled brush to gently scrub areas. Heavy deposits can be scraped gently with the edge of a spoon. If you can treat the water, that may prevent deposits. A bit of algae growth may also "soften" the water as will powerful filtration. A filter rated for 3-4 times the volume of the tank may remove enough minerals to decrease accumulations.

Hello, and thank you for using PetCoach. The most common (and easiest) way to clean a fish tank is with a siphon-style cleaner. Fish tanks should be cleaned in stages, generally replacing 10-15% of the water at a time. There are times where a larger cleaning might be necessary, but removing the fish and changing too much of the water at once can be quite a shock and can be dangerous to the fish, so this should be saved for only extenuating circumstances. Here's a helpful video on using a siphon cleaner: http://video.petco.com/v/18852/how-to-clean-your-aquarium-with-the-aqueon-siphon-vacuum-/ And some more reading you may find interesting on general fish tank cleaning and maintenance: http://www.firsttankguide.net/waterchange.php Hope this helps!

Yes, you can rinse filter media (the sponge) using tank water. This will preserve beneficial bacterial populations in the sponge. The plastic filter parts can be rinsed and scrubbed using tap water. Perform a partial water change, no more than 30% total volume, using conditioned water that is temperature matched. To limit algae overgrowth, do not overfeed, limit lighting to 8-10 hours daily and monitor water temp. If possible, turn up filter flow to get the water moving. Algae thrives in slow moving water. Do this only if your fish are not affected by stronger currents.

Thanks for reaching out. You need to determine why it is cloudy before you can treat. Test for pH, ammonia, nitrites and nitrates. Exam the filters and clean if necessary. Some fish stores will let you bring in water samples to test. Good luck.

There are different ways to control algae accumulation inside the tank: Limit the nitrate accumulation in it (regular water changes is the most common method of removing nitrate), limit the lighting period in the aquarium (4 hours a day) avoid overfeeding. Try Algone, very effective against nitrate, it is not an algaecide but it can control indirectly algae. If all these methods are not effective, algaecide are then needed.