Well lets consider the amount of people we know goldy that have had goldfish after goldfish in those things, I do like them they are very attractive, I did consider buying one when they first originally came on the market, but i just think its as bad as a goldfish bowl. The larger ones are a bit better, but then they would be, more able to cope with the fish media.
I think they do about 3 sizes and they do look nice, I just get anxious when people (like lewis) start putting in fantails, they may be small now, but they do grow quite big (dont they goldy) does take them a while though, not the fastest growing fish.
As an owner of 'a posh goldfish bowl' let me comment on this subject... I absolutely agree with you that manufacturers' pictures with several goldfish in the bowl are very misleading, especially for beginners. I think that biorbs are ok as ' a nursery' for young goldfish but it should be stated clearly in the instructions that at some point a bigger tank will be a must. I cannot agree with the opinion that they are just as bad as ordinary goldfish bowls. I find aeration and filtration systems efficient and easy to maintain, have not had problems with water pollution and I think they are fine as long as you don't overstock or overfeed.
Goldy wrote Re: Cleaned and cycling If you look at a biorb like it is a posh goldfish bowl with a filter then it isnt so bad to keep 2 very small fancy goldfish in one, as long as it has been cycled first and you keep up the maintenance, I have got a tiny telescope eyed fantail which would be fine for about a year in a biorb with another the same size as long as you get a larger tank for them as they grow it shouldnt be a problem, I know you don't like them Di but with common sence it can be done.
I still stand by that statement ladies all it takes is common sence but not everyone has some do they Di, like Lewis for instance