How to reduce light during the the first week of a HOG Scrubber®:
http://youtu.be/DPvh-z7M_Uk
How to even out the air bubble flow in a HOG Scrubber®:
http://youtu.be/v3750CXWJmg
How to un-stick HOG Scrubber® shells that have stuck together:
http://youtu.be/_xEwmotLplQ
How to do an air tube cleaning in a HOG Scrubber®:
http://youtu.be/XJw4uTlXDY4
How to deal with a rim, when positioning a HOG Scrubber®:
http://youtu.be/ZrlPRP9vLhE
How to open up a clogged air tube on a HOG Scrubber®:
http://youtu.be/xofQI-tallk
How to modify a HOG Scrubber® to attach to thick glass:
http://youtu.be/kYN4TbCmq78
How to modify a HOG Scrubber® to be more quiet:
http://youtu.be/1PK9H7AnbP0
Also: http://algaescrubber.net/forums/showthread.php?3309
How to decide how to clean a HOG Scrubber®:
http://youtu.be/dVyIM29xYtY