You have Algae Bloom aka Green Water. It's relatively common in newer tanks and it does not harm fish. The amount of dis-information on this condition is abundant on the web...
Stop doing water changes - it will only prolong the bloom.
Adding an UV sterilizer will clear up the water in 2 - 3 days.
Leave everything as is sans water changes and it will go away by itself in about a week.
Once it's gone, the plants will bounce back.
I blame the cats