No, no, no.... Please make it easy on yourself.. Fill it to the top. Then put the lid in place. Use the prime 'pump' after it is running. You WILL need to shake the Fluval from side to side - not violently - but just enough to get the air that's inside the canister to the top and out into the tank. It's easy, it's just air that is also causing the noise. It needs some mild shaking.... Let it sit for a few minutes, shake again. (no this is not part of a Shake-N-Bake recipe, just tips Fluval decided not to tell us..)Originally posted by GulfCstAquarian
...fill the container partway and hold it sideways for 20 minutes

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