Originally Posted by Animal Mother

Biorbs are like little torture chambers for fish.

Originally Posted by Fishyfins

you either love them or you hate them. 90% of the fishkeeping community (myself inclusded) hate them. they are ok if done right, but as ive said before in this thread, they have huge problems.

problems are low surface area leading to low oxygen levels, meaning you cant put many fish in the tanks, and pitifully underpowered filter, again meaning you cant put many fish in the tank. all in all, biorbs look cool, and as long as you only put a few small fish in a tank (say 5 or 6 tetras or danios in a 30L one), then they are fine. but too many people overstock them, or even worse, put goldfish in, which leads to huge problems, and often fish dying very slow drawn out and painful deaths