I started my 75 about 2 months ago have done water changes every week. 25% max. I am getting this cloudy milky water. I know they say bacterial bloom but I am not sure. I had an issue with micro bubbles. I have a fluval 407 and was trying to use a sow-8. I can not figure out how to clear my water. Done multiple changes. Please any advise would be appreciated. Do I need the sow8?