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Hello all! Happy Holidays! My 55 gallon has been up and running with just one common goldfish in it, for about 3 months now. A months ago I got some new led lights on just one side. I have no live plants. Last week I noticed a brown residue on one side of the front glass on my tank. I cleaned it...

Do I need to have gravel/sand covering the whole bottom of a 55 gallon tank n tank? I just bought a used one and plan on just transferring what I have in a 7.5 gallon to the new tank. Should I buy more or can I leave it bare? I have 4 marissmo moss balls to put at the bottom.

So I e already posted several times and have another change of plans. I've become too emotionally attached to my goldfish so I want to keep him. I'm purchasing a 55 gallon tank for him to live in for a couple of years until I can figure the pond thing out or a bigger aquarium. He's currently in...

So I have a 7.5 gallon tank with a goldfish in it. I found the gold fish a pond home and willing be transferring him this weekend. I would like to cycle the tank and put a beta and some snails in it. Do I need to start over with a new filter? I'm pretty sure I start out with new water because...

Can a goldfish be in a tank with no sand or gravel at the bottom? And if he's already in a tank too small should I take most of the fake plants out to give more room and make it easier to clean?

I am a new goldfish owner and trying to get him in the proper sized tank without breaking the bank. I acquired this goldfish after taking my nephew to the fair and he lived through 4 months of a VERY small box plastic tank we purchased from the fair. He is now in 7.5 gallons but I have done my...

I currently have 1 goldfish and am looking for a used aquarium in my area that is suited for him. It looks like I'm gonna end up with a 55 gallon. What filter do you recommend. I've never had an aquarium before

I cannot post on buy sell or trade to rehome my goldfish. Why not? What do I need to do?

I just did an 80% water change due to high ammonia and now my goldfish is acting really stressed out. He's swimming erratically and I've noticed him air gulping a few times. I do have him in too small of a tank but it's all I have for now. 7.5 gallon. I used API ammolock to treat my tap water...

So I've taken your advice and just did an 80% water change with treated tap water. As a reminder I have one goldfish in a 7.5 gallon tank. My fish is acting a little erratic ? But I was unable to get all the uneaten food out. It's mostly seaweed from a strip I put in there. I'm using a hand...

I have one goldfish in a 7.5 gallon tank with filtration and air stone. I think he is a common or comet goldfish. I got him from the fair when I took my nephew? I know this is not a big enough tank for him but it's what I have to deal with for now. All testing levels are good but my ammonia. I...

I rescued a goldfish from the fair and it lived in a little box tank from the fair for 4 months. Now it's in a 7.5 gallon tank and I'm working on getting all the levels under control but it hasnt grown at all I don't think. I know that this tank isn't big enough for it but can it live in there...

Hello! I'm new to keeping an aquarium. I rescued a goldfish from the fair. I didn't do research and bought a 7.5 gallon tank with filter. Filled it with purified water and put the fish in it. Now that I e done research I realize it really needs to be bigger and I should have cycled the tank...