I need a poop cleaner to hoover up my tank in-between water changes. I do a water change once a week but still get a lot of fish poo during the week are these battery operated vacuum cleaners any good and will they be al-right on sand?
http/cgi.ebay.co.uk/AQUARIUM-FISH-TANK-BATTERY-VACUUM-SYPHON-CLEANER-NEW-/270658100066?pt=UK_Pet_Supplies_Fish&hash=item3f047adb62#ht_500wt_1156
http/cgi.ebay.co.uk/AQUARIUM-FISH-TANK-BATTERY-VACUUM-SYPHON-CLEANER-NEW-/270658100066?pt=UK_Pet_Supplies_Fish&hash=item3f047adb62#ht_500wt_1156