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Lately I've been noticing brown patches/spots around my 5 gallon aqarium. I can't quite figure out what it is...could it be brown algae? If so, is it harmful for my fish? Here's a picture of the brown spots: :confused:

I have a 5gallon that finished cycling and I have two platies and two mollies. One of my molly is pregnant and she is swimming head up, is that a sign that she is going to have her fry soon or is she ill?

My 5 gallon fish tank has been cycling for over two weeks now. Yesterday around 4pm I added 9drops of ammonia. Today I didn't add any and when I tested the ammonia and nitrite, both are 0 and when I tested nitrate it is 5-10ppm. Is my tank done cycling and ready to add fish?

I have a five gallon that I'm currently cycling. I'm adding ammonia and testing the water every day. I have been adding 9 drops of ammonia per day. As of today, the ammonia is 3-5ppm and the nitrite is around 3-5ppm also. Do I start adding 4 or 5 drops of ammonia now or do I keep adding 9? I'm a...

I'm cycling my 5 gallon aquarium and I started cycling it on 9/14. On 9/14 I added 18 drops of ammonia, on 9/15 I added 18 drops and the ammonia was 3-5ppm, on 9/16 I added 18 drops of ammonia and it was 8ppm. I tested the nitrite and it was .25ppm or lower. Today (9/17) I tested the ammonia and...

I'm currently cycling my 5 gallon fish tank. I have API's freshwater master test kit and my ammonia level is around 8ppm and my nitrite level is not even .25ppm. I heard that when you start to see nitrite, you decrease the amount of ammonia you put in by half. Is that correct? Right now I'm...

A 20 gallon was just sitting in my basement so I researched on fish for about a year before deciding to get any. I cycled my tank with ammonia which took 3 weeks. After 3 weeks I decided to add 1 fantail goldfish, 15 days later, he died. Then I bought 3 more goldfish after 15 days each one died...

I bought 3 goldfish at Petco 13 days ago and all three looked healthy. I went around to all of the LFS and none of them carried goldfish, the closest thing they carried was koi and those are pond fish. Well, around a week ago I noticed white dots on my goldfishes and when I had bought them there...

My 20 gallon aquarium has been cycling for over two weeks now. (About 18 days now) and as of yesterday the ammonia was around .25-.50ppm, the nitrites really high around 10 ppm and the nitrates around 20 ppm. Is my tank almost done cycling? Will the nitrites go down soon, and is it okay if the...

My 20 gallon has been cycling for 6 days (tomorrow will be a week) and i have been adding 16 drops of pure ammonia a day which makes the ammonia level from 3-6 ppm. The ammonia hasn't dropped yet...am I doing something wrong? How long should it take until the ammonia drops and nitrite rises? I'm...

I was thinking of getting a fantail goldfish but they can grow very long and produce a lot of waste. I was considering some female bettas. I just don't know about fin nipping though. Would 5 female bettas get along and fit in a 20 gallon aquarium?

I just started cycling my 20 gallon aquarium today. I have heard that you can take things like gravel, plants, decorations etc. from another fish tank if you have one and put it in the cycling tank and it will speed it up. Well i have a 5 gallon betta tank which is heated at 80 degrees. I've had...

Yesterday i had just set up a 20 gallon aquarium, when i had bought the ammonia i didn't know that you shouldn't put in ammonia with surfacants in the aquarium, should i siphon out all of the gravel and clean everything and add new water back into the fish tank?:confused: Will it be harmful to...