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Questions tagged [algae]

Photosynthetic microorganisms that grow in wet environments. Algae are not plants, but large growths can sometimes resemble them superficially. Pet owners may encounter algae as a cosmetic nuisance, a food source for herbivores, a water quality problem, or even symbiotic growth within an animal (...

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2answers
1k views

Would a small amount of bottled water mixed in with an aquarium harm the fish?

This is kind of urgent - I'm watching someone's dogs currently because that is what I am experienced in but they also have an aquarium. I have little to know experience with fish and I did warn the ...
2
votes
0answers
28 views

Green water after refilling dry tank with no fish

Several months ago, I moved to new city and had to drain my 20-gallon tank and give away my fish. The tank sat empty (aside from the gravel) for several months. Last week, I decided to fill it back up,...
5
votes
1answer
32 views

Plants for dirty/algae ridden goldfish aquarium

I have a 20gallon/70litre freshwater aquarium with two comets now about 2inches each. The aquarium gets dirty with algae over the glass and all the plants very quickly after cleaning. This is nothing ...
2
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0answers
28 views

Completely Self Sustaining Aquatic Environment in a Sealed Jar

I recently got the idea into my head to create an entirely self sustaining aquatic environment in a (large) sealed jar. I'd like to include: A layer of soil and gravel at the bottom A large number ...
4
votes
3answers
89 views

Green water in aquarium

So my 45 gallon tank water has a greenish tinge to it. I assume its algae, as I put it below a window. Even with the blinds closed, Im sure it gets some sunlight causing the algae to grow. I got a ...
4
votes
2answers
235 views

UV film on fish tank

I have moved in to a new condo. The only place for the 40 gal. tank is across the room from the picture window (facing north, no sun). I Am now having a problem with algae that was not present before....
2
votes
2answers
897 views

Is this white hair algae?

So I have started a small nano planted tank. Super ambitious I know. I failed once and now I am going for it a second time with some new plants and doing waters change almost every day. Currently I ...
1
vote
3answers
141 views

How to remove green bacteria algae from aquarium?

How to remove green bacteria algae from aquarium? Reasons might be location of the aquarium close to a window with direct impact of sunlight and/or too high values of PO_4 phosphate.
1
vote
1answer
726 views

How can I get rid of string algae that's inside java moss?

The last batch of plants that I ordered came with a surprise supply of string algae. So now it's growing on top of all my plants in the tank. I've been trying everything I can to get rid of it. The ...
3
votes
1answer
33 views

Crinsom colored growth in saltwater tank?

Today I notices some dark red growth on inside my aquarium. Any idea what this is?
4
votes
2answers
80 views

Red algaes in my tank

I have found some red algae last night in my tank. I'm looking for possible cause and also a way to kill it. I have shrimp and fish in that tank so no chemical if possible. My water parameter are ...
2
votes
1answer
55 views

How to remove the red algaes in reef tank

We have our reef tank for about a month and a couple of weeks. For the least two weeks we get on our live sand red algae, after we remove them, they re-appear after less than two hours. Here is how ...
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5answers
136k views

How do I eliminate the black algae from my planted aquarium?

My aquarium has live plants with a betta, hatchet fish, barbs, a cory, and a Siamese algae eater. Black algae is growing on the decorations and glass. I scraped it off the glass. What else should I ...
8
votes
1answer
455 views

Which South American fish will keep pygmy chain sword plants clean?

I have a new tank (40 gallon long) that's just finished cycling. I've had plants in there for a few weeks already and they're doing well overall, but are starting to show some real algae build-up. In ...
5
votes
1answer
219 views

How do I know if there is too much algae in an outdoor fish pond or pot?

This question Would my fish benefit from snails in their pot pond? asks about having snails in a fish pond/pot to reduce algae. My fish are happily living in a outdoor ceramic pots, approx 80cm high ...
14
votes
4answers
484 views

How to remove the algae from the glass of an aquarium?

I have an aquarium and it has algae on the glass. The algae is somehow so attached to the glass that I´m afraid I'd scratch the glass if I tried to clean it using some hard plastic. How can I remove ...