Have a 55 gallon tank with no more than 12 fish at about 2" each. Silver mollies red tail wags and 2 placos. The filter is a Marineland Emperor 400 that filters 400 gallons per hour and is for tanks up to 90 gallons. Recently the tank has gotten very cloudy. I do a partial water change of 5 gallons about ever 3-5 days and. Hangs the filter once a month. I'm pretty sure it's algae growth but I'm not sure how to stop it. I have included a picture do you can see. Any recommendations for how to get rid of the foggy water. Also I'm thinking about trying a DIY syphon pump system but not sure if it would be beneficial.