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For a couple months I’ve had issues with black brush algae and cyano, and it’s growing rampant and thickly all over the tank no matter how thoroughly I clean it. Green algae is also growing quicker, but the BB algae is out of control. The last two times I cleaned the tank I pressure washed the...

Long story short, I just got back from vacation, left very specific instructions for the fish sitter and somehow he still messed up, really bad. I had the manual feeder on for once daily and we found out he has been feeding them three times a day. I told him not to touch anything anymore and...

My friend's fancy goldfish has recently developed a white lump on top of his body in front of his top fin that seems to be rapidly growing. His behavior has otherwise not changed. It has just appeared over the past week. I have never had this with any of my fish before so couldn't give him...

I just came back from vacation for two weeks yesterday, and before I left I set up my goldfish aquarium with an automatic feeder and automated timed light switch. The feeder was supposed to feed them once every 24 hours and the light was timed to stay on from 12pm-8pm. Even though the automatic...

I have a 180L aquarium with (now) 5 goldfish, a CAE, and two snails. I have hardly been home the past week because of work, but everyone seemed fine the little time that I did see them. However on Thursday morning before leaving for work I noticed one of them was stuck vertically upside-down...

I've noticed one of my goldfish has early signs of dropsy so I've transferred her to the QT. I couldn't find Epsom salt so I got natural sea salt recommended for bathing similarly to Epsom. Before I put it in though I want to make sure that it is ok and won't be harmful? The QT is about 6.5...

I have had my two female goldfish separated from the other six males for about 10 months now because the males got into heavy breeding mode and were chasing them around literally constantly, including every time I tried to put the girls back in (I tried once every couple of months and the guys...

I have 6 male goldfish + a CAE and two snails in a 50 gallon aquarium, and the past week or so only one of them has been continuously rubbing his belly in the gravel and at times hangs out near the bottom of the tank with his belly hovering over the gravel. Otherwise behavior is normal...

I have a tank with 9 common goldfish, and about 6 months ago I realized that of those 2 of them are females and the rest are males. The males have been chasing the females on and off mercilessly for months; I periodically quarantined the females to give them a rest and then after a week or so...

Hi, I have over the past few weeks noticed a problem with some of my common goldfish; two of them in particular you can see all the red blood vessels in their tails, and it is also accompanied by a white fuzz on some spots. I read online that this is normally due to water quality and that it...

Hi, I have a 50 gallon freshwater aquarium full of goldfish and I am moving house and need to bring them with me. My deadline just got moved up very quickly so I only have a few days to figure it out. I have absolutely no idea where to begin the process so if anyone could give me a walk through...

I went away for the weekend and just got back home (my boyfriend was taking care of them while I was away). Before I left all of my fish were fine and normal, and I just fed them and noticed one of them has a big bloody streak on her right side near the back, and another smaller one on the left...

I have two common goldfish, a sucker fish, and a snail in our aquarium. Lately one of the goldfish has been losing his color; he used to be bright yellow on top fading to a white on the bottom, but the past few days the yellow color is almost completely gone and is just in a few small patches...

I have quite a small common goldfish, we have had him for a couple months now and he lives in our aquarium with a couple others. They have been doing very well, except the past few days the little one has had some very strange symptoms with his eating and bowel habits. We have had problems with...

My sarasa comet has suddenly come down with what appears to me to be ich. On one side he has little white salt-like spots, two tiny ones on his dorsal fin, two tiny ones on his side, and a big clump of them on his face. I haven't noticed too much change in his personality, but I just noticed the...

One of our goldfish has always been "quiet" (not as active as the others, but still relatively alert and healthy), but the past week or so she has been extremely lethargic and it is really concerning us. She now spends most of her time hovering near the surface (breathing normally, no gulping at...

We recently added an algae eater fish to our aquarium, and I think he brought in a stowaway because a few days later I noticed we have a baby snail, hardly bigger than a grain of rice I'd say. I've been reading up a lot that they overpopulate quickly. If it ends up multiplying will that affect...

We have a tank I think 6 or so gallons (25 or so liters), with one comet, one fancy, and one algae eater. Our pet store guy advised us to try to keep the water temperature as consistent as possible and avoid fluctuations. The room we keep them in tends to be very sensitive to temperature change...

For five months I fed my two common goldfish in a bowl flakes, and they had a schedule and routine and ate together just fine. After one of them unfortunately fell ill and passed away, we moved the survivor and a new fancy goldfish friend into a bigger tank. Our pet store guy and some...

Hi! New to the forum :) Well I'll try to explain the most recent issue as briefly as possible: It's been a rough week in our aquarium household, and we have been experiencing many confusing problems lately. Backstory, we had two easy goldfish (one sarasa comet, one common) in a tiny bowl for 5...