Bacterial Bloom?

[Cleopup]

Hi, I've a 180L tropical set up, which I've had running fine for 18 months. Last week I did my normal housekeeping routine which involves a gravel vac, clean of the filter, a 10-15% water change and a clean of the inside of the glass.
I've been carrying out this very same routine since I've had the tank. No new fish have been added for the past 4 months.
However, last week after carrying out the water change the water went incredibly cloudy. It's now finally settling down, but I can see there is a lot of slime on the inside of the tank. Never experienced this before, and I suspect its a bacterial bloom, unless anyone else has other ideas?
Whats the best way to tackle this?

 

[Zikofski]

hm i am not sure about this usually a bacteria bloom makes the water white or cloudy. but the slime i don't know have you got any pictures off the slime? dose it look like anything from this site here
 
http/www.theplantedtank.co.uk/algae.htm

 

[Ch4rlie]

Is the water from tap water clear?
 
Also over cleaning the substrate and filter can result in bacterial blooms.