I have had this tank for over a year now and have never experienced anything like this. Yesterday, I thoroughly clean the tank, did a 30 percent water change and replaced the filter as it was desperately in need of doing so. Everything seemed to be okay even this morning as I left for work. Upon returning home I find the the water has become extremely cloudy, an immense amount of white looking algae is all over my plants and four fish and all of the shrimp have passed away, the only survivors are a few Cory cats. I’ve had a bit of algae growing recently but I would just clean it out. Any help would be appreciated I’m not sure what to do and fear for the remaining fish.
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