Thanks for your advice, Tom!Tom said:Try and increase to 50% water changes per day, and keep pulling it out. A toothbrush might help to remove it, and maybe some thin airline to get in the small gaps. I would personally increase both my CO2 dosing and possibly EasyCarbo too. An inline diffuser might help with distributing more CO2 if you are able to get one. Keep going, you can beat it.