Thanks everyone.
I'll settle for the tetra whisper 150 for the air pump then.
I've been researching into the AquaClear filter system and have found quite a few on eBay UK, however I'm slightly confused. I'm quite new to all this stuff - but I want to learn more!!
From what I gather, it is an undergravel filter??
How exactly do I go about setting up this filter? What parts do I need? Does it take any kind of bio-rings type media for extra beneficial bacteria?
Sorry for all these questions
Thanks lohachata for your kind offer... if I ever get into trouble with the filter, I'll contact you

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Oh and btw my tank is 16” deep as someone asked earlier. COM, I will also drop them an email and see if they have a UK distributor.