Deck cleaners and sealers

[Pam]

What's everyone using these days? I have the usual, build up of dirt and some areas with mold. We got it semi cleaned up using a 1400 psi power washer with a 40 degree nozzle. Don't want to hurt the wood. That got a lot up, but clearly I need a cleaner. And soon, a sealer. I'd prefer semi transparent. It seems they last 2 years where opaque lasts 3. The wood still looks pretty good so I'd rather save opaque until much later in the wood's life. If I remember correctly, the deck builder used a Cabot semi transparent coating. That was probably 8 or so years ago.