Yeah. I have told them to come and pick it up, I wouldn’t be paying to send it back to them. I’m in Yorkshire and paid via PayPal credit. I emailed them yesterday and had no reply. I was going to wait till Monday and then if no response do a chargeback.What happens if the gate valve gets clogged by a snail?
With no emergency drain the return water from the sump will overflow the display.
I wouldn't be offering to return the tank, I'd tell them to pick it up - their problem not mine.
In the meantime my payment would have been charged back by the bank based on the photos.
Obviously, consumer protection laws differ by country - that's how it would play here - not sure about in England where the OP is located.

