A Good Gravel Cleaner?

[my fat fish]

well im after a good gravel cleaner as the 1 i have atm its not all that good im after 1 that can really clean th gravel out well with minimal disturbance 4 the fish any links or ideas welcome

 

[Piltdownpaul]

i use the syphon pipe which swirls the gravel around in the bottom of the pipe-that gets my aqua one 620 clean and it doesnt disturb the fish at all