Our wavemakers provide 8 modes that let reef keepers to imitate any ecosystem they need to have working with any velocity they call for. When dosing or feeding your tank basically maintain the feed button for getting 10 minutes of tension spare time. Work will require a prison history Test. https://www.evernote.com/shard/s635/sh/5073e314-23d4-b697-856d-f46e06698c51/e621af9970ec897accd3711aca25a21d