Yes, here is the description from the manual on the CD-
As in nature and similar to the random current, the „Storm cycle“ is used to desediment the reef structures in the aquarium. The storm-like current is not in operation permanently, but only several times a day or a week, which can be programmed correspondingly.
This function can be activated in the „Options“ field.
The frequency of the „Storm cycle“ can be set from one hour to seven days.
The „Storm cycle“ is based on a fixed and precise pump cycle which controls all four pump outputs for five minutes according to the following programme:
Pump 1 -> 20 seconds
Pump 2 -> 20 seconds
Pump 3 -> 20 seconds
Pump 4 -> 20 seconds
Pumps 1 +2 -> 20 seconds
Pumps 3 + 4 -> 20 seconds
Pumps 1 + 3 -> 20 seconds
Pumps 2 + 4 -> 20 seconds
Pumps 1 + 2 + 3 + 4 -> 20 seconds
Pumps 1 + 2 -> 30 seconds
Pumps 3 + 4 -> 30 seconds
Pump 1 -> 10 seconds
Pump 2 -> 10 seconds
Pump 3 -> 10 seconds
Pump 4 -> 10 seconds
Pumps 1 + 2 + 3 + 4 -> 20 seconds
Position the pumps in the aquarium is such a way that the „Storm cycle“ cannot cause any water damage !