I run a single Gyre on my 65g tank - 3' long. Here is my program to give you some ideas - the intent is to model a form of tidal pattern.
1. 00:00 Gyre 50%
2. 02:00 Gradual Pulse 30%
3. 07:30 Continuous 40%
4. 08:30 Pulse 60%
5. 13:30 Continuous 50%
6. 14:30 Gradual Pulse 70%
7. 19:30 Continuous 50%
8. 20:30 Pulse 60%
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