Question 2, water flow and designs for reef tanks

[Ruth]

Oh man now you are going to get me confused There is a specific controller that you get for the Tunze streams - it just depends on if you want to only control one powerhead (single controller) or more than one (multi controller) They basically can be set to control the amount of juice (flow) that the powerhead has as well as have it turn off and on at preset times intervals.
These controller only control the Tunze powerheads and not all that other fancy smantzy stuff. Those controllers I know absolutely nothing about.
Here is a link to a 6100 with a single controller.
http://www.jlaquatics.com/phpstore/s..._ID=tz-ts6110k