This app uses BLE 4. 0 to control Fluval Bluetooth LEDs. Requires Android 4. 3 and above. Requires Bluetooth version BLE 4. 0 and above. For use with the following devices: Fluval Aquasky Bluetooth LED. Fluval Plant Spectrum Bluetooth LED. Fluval Plant Nano Bluetooth LED. Fluval Marine Spectrum Bluetooth LED. Fluval Marine Nano Bluetooth LED.