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1- I have a Koi angel fish that has been sick for about 3 weeks now. The fish has lost its left fin and has like a growth on it. It swims upside down erratically like it cannot control where it’s going. It was already doing that before it lost the fin. I’m not sure it’s eating. It tries to get...

I am working on setting up a fish tank that I have inherited from another teacher. It is 29 gallons. I need stock recommendations. Since this is a tank that will stay in my classroom, I have the following requirements for the fish: 1. They must be ok with a temperature in the low 70's. I...

So I am a metric system person. I'm trying to figure out the gallons for this tank I inherited for my classroom. The dimensions are: 12"D x 19"H x 30"L. How many gallons is this? Thanks! Sent from my iPad using Aquarium Advice

I'm thinking about buying a canister filter for my tank, but don't know what is good. I have a 60 gallon tank and it currently has 2 AC50 hob filters. I would like a canister filter that isn't too pricey, but easy to maintain and reliable. Thanks! Sent from my iPad using Aquarium Advice

I'm sure this has been asked many times, but what is the best way to clean substantial hard water stains from an old tank? Thanks! Sent from my iPad using Aquarium Advice

I have suspicion that one of my cories has ich. I saw a tiny white speck on it. I may be wrong, but I want to nip it in the bud. So, what kind of medication would effectively eliminate this in a tank with scaleless fish, snails, and plants? I cannot do the heat method because I have sunfish...

I decided to replace the fluorescent lights that came with my tank in an attempt to help my plants. The lights that came with the tank are Marineland natural daylight. So, not knowing anything about lighting, I got on Amazon and looked for something better. I purchased the Floramax T8 because...

I need someone who knows their sunfish to try to identify this sunfish fry for me. My ID is Redear, which means he will be rehomed when he gets a bit bigger. I'm trying to see if someone has a different ID. Thanks in advance. Sent from my iPad using Aquarium Advice

Could someone tell me what is wrong with this plant and what I can do to fix it? It actually looks worse in person. The leaves are decaying. I use root tabs and Leaf Zone. All the other plants are fine, as far as I know. Thanks! Sent from my iPad using Aquarium Advice

So, some of you know that I am working on fixing the high nitrate issue in my tank. It started a couple of weeks ago. Several things changed around that time. All my MTS were eaten, and I put in new plants that I bought online. It was hornwort. The nasty white hair algae that has appeared...

Could someone help me read this test result? I have a hard time telling them apart and I am working on lowering my nitrates. It looks like 40 or 80. I can't tell the difference in the chart. Thank you! Sent from my iPad using Aquarium Advice

I am in need of a better cleaning crew for my tank. Hair algae is spreading and the plants are getting this "dirty appearance". Every time the fish kick up the substrate, there is a bunch of detritus/food getting kicked up. I have been overfeeding lately because I have some fry and was afraid...

Could someone help me identify these fish? Thanks!

I have a variety of danios in one of my tanks. They are: 1 long-fin gold zebra Danio, 1 long-fin zebra Danio, 4 long-fin leopard danios. My question is, do they cross-breed successfully? They school together and chase each other, but I'm wondering about breeding. What would the off-spring...

I'm thinking about adding about 1" of sand to my Eco-complete substrate. It is a 60 gallon tank. Is there a way that it won't become an awful mess and hurt my fish? Thanks! Sent from my iPad using Aquarium Advice

I have a million MTS and I have decided that it is time to take control of the plague. I am thinking about buying some assassin snails. The question is, will the assassins also eat mystery snails? I have those as well and don't want them dead. Second question. I know nerite snails only...

I unfortunately don't have any pictures of the particular fish, so I will have to describe it. I saw these fish yesterday while visiting a fort (they were in the moat). I have a native tank at home and would love to have some, but don't know what they are. The adults were about 3 inches long...

I just came back from a visit to the largest aquarium in Europe, in Valencia, Spain. I thought I would share a couple of pictures, although they are not very good, since I took them with my phone. Sent from my iPad using Aquarium Advice

I'm looking for a good cleaning crew and I'm interested in crabs that stay small and are fully aquatic. Any suggestions? Thanks! Sent from my iPad using Aquarium Advice

Let me start by saying I don't have a picture yet. So, I'm in Spain visiting family and we go into a lfs and I start checking out the fish. They all look beautiful and the plants look really healthy too. They have GBR's that are absolutely gorgeous. Then I start looking at the...

I don't know what happened to my brand new filter. I have two AC 50 HOB filters on my 60 gallon tank. I have them plugged into a power strip. I turned the power strip off to do a water change, changed the water, refilled the tank, and when I switched the power back on, one of the filters did...

Can anybody recommend any? Sent from my iPad using Aquarium Advice

Can someone tell me if any of these plants need root tabs? I don't know their name. Thank you! Sent from my iPad using Aquarium Advice

What is the best water changing device you own? I need to buy one for my 60 gallon. Thanks! Sent from my iPad using Aquarium Advice

I own two figure 8 puffers. I have had them for about 1 1/2 months. I did not treat them for parasites when I got them because the stupid lfs told me they were captive-bred. Anyway, a couple of weeks ago I noticed one of them had light stringy poop, instead of their usual "nuggets." I...