Plants & Cloudy Water

First off I have a 30Gal tank with 3 4 - 5 inch goldfish.

About 30 days ago my tank became cloudy virtually over night. I did the
extra water changes, filter change, and check the various CHEM levels of
the tank. This was over a 20 - 25 day period tring to clear up the tank but
it would not clear up until I removed the plants. Once I removed the
plants the tank cleared up within 24 hours. Can anyone shed light on
why removing plants cleared up my tank.


Thanks,

Kurt