Hi Jim/KF -
Thanks for answering my post. I have been looking online at various websites there in the UK. The little tank from Pets at Home is just over a gallon, costs about $45, and is really too small to properly house a Betta. I know that people do it all the time, I'm just one of those who think the little fish would need more space - I'd like to provide them an apartment, at least, rather than a jail cell.
Our last guy did well in the 5 gallon tank, but a 10 gallon would have been better - more space for him to toodle around in.
I'm finding tanks on UK websites similar in size to what we have here now on promotional sale for about $75 (at today's exchange rate, for just the tank). Our current 5 gallon tank came with a topper with LED lighting, the filter, thermometer, and some other supplies, for $25, which was good even for here. (Typically a few times a year here the stores put the tanks on sale for $1 per gallon size, so a 5 gallon tank goes for $5, etc. They more than make it up in all the supplies you have to buy from them for the rest of the year.) I actually spent more on the heater (via Amazon) than the rest of the tank setup cost.
The heater we have is a good German one, so we'll bring it and if we can't find the same brand there when we are setting the tank up we'll run it on a transformer. (If we do find a UK plug version we'll just hold our current one back for an emergency backup in case the UK one ever fails.) It looks like filters are not terribly expensive there.
Yes, we're going to have a container, though not a "massive" one. (I hope!) So I can spare one box for the "fish stuff" since replacing it there seems expensive -if it breaks, then I'll have to buy a replacement. If it makes it, I won't. I'll wrap the heater in bubble-wrap and put it in the tank, and then put the tank in with the linens for padding in a trunk that's going.
I'm still very curious why the tanks are proportionally so much higher there. I guess it could be that they are mostly imported and have high import taxes or something like that? The prices for the other supplies don't seem to be so proportionally out of line with what we pay here. Just curious...
Thanks for the advice just the same. If your Scottish friend shows up and knows where we can get tanks cheaper, I'd love to hear from them!!!