Double bullnose for sharks

Ok.

I've been drooling over getting a shark tank for a while, I was even almost ready to pull the trigger this spring until I got a letter in the mail saying they are re doing the roads in my neighborhood and charging all of us $5000-$10,000 for it. So now I'm saving up, again.

Here is my question. I see large rectangle tanks on occasion pretty cheap, or even buying one new isn't bad. I have never seen a used double bull nose used, and new ones are over 2x the price, if not 3x (like 8000 instead of 3000, not to mention te stand is more too)

Every article says you should have sharks in a double bull nose or cylinder tank so they don't hit the corners. However 90% of the posts here or YouTube videos have them in a rectangle tank and it doesn't look like they are suffering.

So....really needed? Better yet, any proof of sick sharks from the many rectangles????


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Btw I'm talking small catsharks, not horn or anything.


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Interesting. So what about rounded corner overflows in the back and then do a flat back hex aquarium so the front has no 90 corners (these are also more, but not as much, and I really like the look).

Anyone able to show pictures or link a thread that shows an injured shark due to corners?


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That makes more sense with the corner thing, only needed for the constant swimmers. Anyone else know of a specific example where a rectangle hurt a cat shark?

Not sure on the road yet, there is a city council meeting and vote in 2 weeks. There have been 2 letters so far, and the price has already doubled, and no word on payment terms ( though Google tells me it's often up front, though there are 5 year payment examples sometimes). I do kind of want the sidewalk they are putting in, just bad timing (my savings were shot last year between the wedding and going on two honeymoons over 4 weeks to Hawaii and then Nepal). I also got a larger than expected raise at work yesterday, so maybe sooner rather than later I'll get my shark

Also, side question. If I had an opening to see the sump and had a large area for live rock rubble, could I throw a star fish in the sump, maybe a few shrimp or cucumber?? I really like some of the saltwater inverts and would love to have them, but obv they wouldn't survive in the main tank (shark, eel, lionfish, small grouper being the plan). They wouldn't be much bio load, though I don't really see people ever doing that, I think it could look pretty sweet if done right.


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