How can I return moldy patio pavers back to normal color?

Patio was new 2014 with the normal colors a mix of pink and gray. Was left unattended in south west Florida during July to Sept 2015. 30% turned black. Looks like mold. Patio adjacent to back of house facing north.
  11 answers
  • Ella Ella on Oct 13, 2015
    power wash with bleach mixture

  • Linda T Linda T on Oct 13, 2015
    I vote for the power wash. Try first in a small area with just water.

  • Janet Pizaro Janet Pizaro on Oct 13, 2015
    Apply wet and forget available from most big box stores.Home depot etc and use a garden sprayer.

    • Patti Mullett Patti Mullett on Oct 13, 2015
      Wet and Forget keeps working. So easy to apply and environmentally friendly, too.

  • Diane Diane on Oct 13, 2015
    I live in Florida, and have to power wash about twice a year...Summer months accumulate the worst...your pavers will look new after power washing, and you probably won't need any additives to power washer...I bought one of the most inexpensive power washers about $100.00, and it works great, is time consuming though...but hey, it least it's nicer than shoveling!

  • Monique Fredline Monique Fredline on Oct 13, 2015
    In the absence of a power washer, bleach works wonders.

  • Jackson Jackson on Oct 13, 2015
    give a double thought to anything containing bleach. It will effect surrounding grass and plants through soil absorption or slash back

  • Johnchip Johnchip on Oct 13, 2015
    have you heard, "Chlorox" and elbow grease?

  • Sandy Duncan Sandy Duncan on Oct 13, 2015

  • Barbara Barbara on Oct 13, 2015
    There is a product called Wet and Forget that can be bought on line. It works and has a residual action to prevent future stains.

  • Mary eilers Mary eilers on Oct 13, 2015
    Have you tried power washing them?

  • Trisch Trisch on Oct 14, 2015
    I would first try to power wash it away. If that doesn't remove the problem, try a biodegradable cleaner and a deck brush and try scrubbing it away.