Cleaning/sealing unknown wood deck
Last July we bought a home in Florida and now that it's our "dry season" I'm thinking it's the time to clean and seal the deck. I have no clue what type of wood it is, though. I've searched through and found great recommendations for people with cedar, redwood and ipe decks. I know to stay away from Home Depot/Lowes/Behr stuff as well as that one-time-application stuff and may check out the local Sherwin Williams but I'd like to know from you learned people if it's going to make a huge difference that I don't know what sort of wood my deck is made from.
Here's a couple links to pictures of the wood:
Up by the door under the screened in porch where it's most protected -
And down at the steps on the open deck where it's least protected -
I've read about oxygen bleaches and wanted thoughts on those. I have a dog and would like something that would be safe for him and for the grass/vegetable garden surrounding the deck. I'm looking for a sealer that will sink into the wood and can be reapplied each year without having to be stripped. I'd prefer something with a tint to it as I'm not a huge fan of grey wood. Thank you in advance!