will a red-fin shark be ok in a biorb fish tank?

Answer 1

I wouldn't recommend it. The very design of these bio-orbs are strictly for trendy looks and not for practical design, and for each gallon of water it holds you have less actual room for fish then a traditional tank - fish kept in these tanks, even the larger sized ones, are best off smaller and more peaceful types.

red-fin sharks are territorial fish and grow to a respectable size that can exceed 6 inches, and are best off in regular style tanks of 30 gallons or more.

Answer 2

What size Biorb? If it is 20+ gallons with a filter and heater, sure! Redfin Sharks get about 6 inches and are quite aggressive when mature. These will chase any fish away from their "territory" and should not be housed with slow moving, long finned fish like Bettas. Email me if you have any questions.

Soop Nazi

Answer 3

Coral sand / crushed coral - those advance the PH. I used some in my forty gallon to assist get my ph slightly bigger - hung it in a mesh bag on the back of the tank. i can not think of how extreme your PH might pass utilising basically that substrate in a small tank like a biorb... i think of it would be a undesirable thought altogether. the ingredient with the biorbs is they are so stinking marvelous that utilising almost something that's no longer offered by using their company reasons problems with the tanks. it somewhat is one reason to keep away from them. i might desire to checklist a bunch of alternative reasons too, yet in view that that's no longer what you asked approximately, I won't concern. persist with what they propose, or you may have subject concerns with the tank. They make it that way for a reason... ($$$)