tank size

I wanna get a super fire red or golden crossback arowana from planet arowana and I'm not sure how big the tank needs to be. The dimensions of the two tanks I've seen are 152.9(L) x 60(W) x 73(H) cm and 202.9(L) x 60(W) x 85(H) cm. Are either of these big enough? The width is what I'm worrying...

I know for sure adult fire eels need a very large tank. But I currently have 2 - 4” Senegal bichirs, a 3” black ghost knife, and a 9”fire eel in a 75 gallon tank. He seems to be growing quite slow. There was a 9” tire track in there with them but he became aggressive toward my fire eel so he was...

Would a RTC be able to live in a 13’x7’x30” indoor pond?. The footprint is good for a RTC but I’ve seen things saying 3’ is the minimum height. Is this accurate?

So, I have a large semi-aggressive tank, but I wasn't sure if denison barbs were okay for semi-aggressive? Another question is if my rainbow shark would see them as a threat or not? I have a peaceful community tank but it doesn't have a current, nor do I think it's big enough (just a 20 gallon...

I am fairly new to keeping big fish. I tried oscars but they wouldn't stop fighting. Got an ornate bichir that I think is awesome. Wanted some tank mates for him. So for my 120 gallon I've got the ornate, three tinfoil barbs, one blood parrot, and one severum. How close do you think I am on...

What is the smallest size tank you would put a sump on?

Hey all, My dad's giving me his old 75g and I'm fairly new to the fish scene. Now, I really want Senegals, like really bad, but I've searched around and asked friends and I keep getting different responses on whether or not I can keep some in my 75g. I understand there's a lot of variables...

Hi everyone, Long time lurker, Lots of wet pet questions out there but hopefully this one gives me all my answers. Sorry if the post gets long or if its in the wrong spot, feel free to move it mods :) There's a tl;dr at the bottom I'm planning on getting a larger interactive fish as a wet pet...

Haven't posted on MFK in a long time. Been keeping cichlids for many years but wanting to switch over to a predator tank with a focus on bichirs. I'm setting up a new tank (240G - 8'x2'x2'). Can I keep lower jaw species such as endlicheri in this tank permanently or would they outgrow it...

Hi. I could use some suggestion from you guys. I have a 60 cm x 40 cm x 35 cm tank and already running for 2 weeks. The water ph is always around 7.7 or 7.8. I am confuse of what fish should i add that is able to live until it hit max size in my tank. Should i add one channa bleheri and one...

Hello Everyone! I have a beautiful Fire Eel currently housed in a 125g planted tank. He's around 18 in. I'm doing some tank re-arrangements to maximize my fish room. I have a 135g cube tank (36 W x 36 L x 24 H) available. I am briefly considering putting my eel into this tank. It's not very...

Hi, i was thinking of doing a large cichlid aquarium but i have some concerns about aggression in the tank. The fishes i had in mind were 1 green terror 1 red terror 1 electric blue jack dempsey...

Okay so I'm in looking for a 150 to 200 gallon tank to start up a American cichlid tank just want some help on stocking, Here are some of the fish I am interested in putting in there and I'm just wondering if it could work?? I'm new to all of the American cichlids currently I have a 75 gallon...

Good evening, owner of 6 inch SAL here. Got the little guy in a 20 long right now. My question is in regards to moving him and growth rate. I have a 150 in the den with 7 3 inch silver dollars in it. However its a very odd "tall" variety tank. I'm paranoid about messing the little guys growth up...

Hi all Want to know would a 5X3X2ft tank be fine for a marbled lungfish for life? Might be able to make it 4ft front to back.... Not only in regards to maintaing water quality but also to allow the fish to move around properly ect... I know these guys get up to 6ft in the wild but...

So. I recently got into arowanas. And i started researching aquarium sized. However i live in an area without alot of aquarium activity, Like Theres some 50 ish gallons, But no big ones But anyways, My question is. Could an arowana fit in a 185gal tank? (You post sizes since i might just build...

So I really need to look at new fish tanks in order to support my current stock, which consists of potential giants (CK, pbass, pleco, black ear pangasius). In order to have more-I have too much already-I need a tank of 300 gallons or more. Where can I get a good deal on a tank that size? Most...

Hello, I have decided to go with a black piranha. I have a tank that is over 100 gallons, I am not sure how many gallons it can hold, but it is 6 feet long, 22-24 inches tall, and 18 inches wide. I was wondering if this it big enough to raise a black piranha for it's whole entire life. If it...

Hello all! I'm brand new to this forums (and "monster fish keeping" in general), so please forgive me (and correct) any misconceptions I have. This is, in short, a rescue story and a cry for help from more experienced aquarists. Yesterday, my girlfriend and I went a picked up a tank that we got...

Hello, I plan on purchasing a Giant Gourami in the future. As of now I could keep him in a 150 gallon. In a couple years I would be able to provide a much bigger tank (300g+). The problem is I can't find any reliable information on how long it takes them to reach adult size. I.e outgrow the...