yeh i got a juwel and its more longways then upwards ( check the fish tank pics for my fishown yours, thats me, and thats my tank, ) i need a stand that can hold some more little 2-3 gal tanks for some bettas
Then metal self assembly shelfing units are a good bet, you can set the shelfs where you want them.
You can pick them up from argos, focus B&Q, there a some fancy types around as well
Only thing i would say is make sure you level it up and screw it to the wall.