Actually I plan to introduce this new young robo to my elder robo...
Should I leave my new robo alone for a week first before introducing them?

Okay, will do it tomorrow.
*fingers crossed*

Huh...like that then how? 

So I introduced my elder hamster and young hamster. At first they were "boxing" for awhile then the elder seems like backing off. The young 1 would sometimes "kiss" the elder then the elder will flip over.
Both of them are in the new tank, the elder doesn't seem to be comfortable in there as he keep trying to escape, while the young is doing his own stuff(digging).
I tried putting both of them in elder's cage and the young 1 took over his favourite hiding spot...
What should I do next?

Nope. I didn't see any biting, no funny noise made too. They're sleeping in their new container now.
Both having their own coconut shell    They share the same water and I put 2 wheels in.
I will monitor them again once they wake up and see how things goes... 

I just checked on them..lifted up the coconut shell and see they sleep side by side 

Try find on petshop. Alot petshop sell silent wheel nowdays.

hahahaha. I'm imagining the run and got thrown out of the wheel due to super speed

nuuuuuuuuuuuuuuuuuuuu

no way of avoiding this?

just 2 days and it smells already

true   

but can just suddenly change their home?

Which PLC outlet did u get the CareFresh bedding? Because I've seen people said that Malaysia don't have that brand 

wd40

I bought Harringtons and Versele-Laga Hamster Complete for my two WW's and it seems they aren't too keen on them. Any idea on recommended feed? I read that Harry Hamster is a good mix - anyone knows where I can buy them?

PS: I also supplement their meals with hand-picked organic seeds/legumes/mix.

give him carrot sure eat

tiny piece only ma

as appetiser lol

same la
give bunch of things they all take sunflower seed
dont care, put it there see if hungry liao sure eat one

u sure eat or just bite? haha

fuuuu

apa your hamster lai de

campbell ah?