I hate my tank!

[Tangman]

as others have said, water change! water change! Invest in a RO/DI !, if you don't your problems will NOT stop! Water changes will bring your parameters down, remember the phrase "the solution to pollution is dilution "
as for the algae problems phosphate reducing media is always a good idea and for now, as already suggested, I would cut back on the lights(or turn them off) and make sure the tank has good flow (power heads)
Also start a weekly regiment of trying to suck up as much of the slime as possible ( when doing water changes)
GOOD LUCK and HANG IN THERE !