How about this algae scraper...

[dougers31]

[video]http://www.agiaquatics.com/message/welcome-winmedia.htm[/video]

Someone on our local forum posted this link... I suppose if you have a huge tank it would come in handy.

 

[Viva'sReef]

HOLY CRAP LOL......thats pretty cool

 

[sts04c]

Roomba, for your tank, WOW!!!!

 

[swannyson7]

I saw a thread about one of those about a year ago on RC and it wasn't a very good review It kept falling off the glass on a 1" thick tank and didn't clean very well either. A neat idea, but needs refinement

 

[ToXIc]

also i would be afraid.. it may get close to the sand bed.. pick up some grains and continue on it way scratching the h3ll out of the tank....

 

[swannyson7]

I'm pretty sure it has a setting so that you could keep it from getting too close to the sandbed.

 

[DC_Reefer]

Man.. how big does a tank get or lazy is the owner to justify the cost of that??!