NEW GROWER! Quick question about the medium i'm using! (coco brick of both peat and coir)

So "coco peat" is loosely tossed around. Its either coco "coconut" Coir or Peatmoss and peatmoss has a lot of versions of its self based on when its harvested from young to old and they both have different grades or qualities of products. Coco or Coir is derived from the other shell of coconuts, their husks. Its a great medium IMO derived from the tropics, some don't like it. Peatmoss or Peat is derived from fresh water bogs, most of witch are in Canada I think. It has a high water holding capacity then Coir and needs more perlite mixed into the substrate to help off set this and ensure their is a good gas exchnage in the root zone. Coir is also sometimes call "green peat" as its said to be less destructive to the environment, but I think this was just clever marketing to sell a product and has no real truth to it and they piggybacked off of the huge peatmoss market that previously existed and its why there are so many similarities in its naming. Basics are Peat = 30-50% perlite mixed in, lower PH over time, high water holding capacity. coir = 20-30% perlite mixed in. neutral PH over time, good water holding capacity. Their are higher and lower quality grade of each product. The one main down side to Coir is that it need to be pretreated or it can cause issues. This pretreatment is called washing and buffering, some also age their product. The purpose to washing is to remove excess salts from the product as the area they grow in. by the sea is salty, legit table salt NaCl, the buffering process is to offset the cation exchange sites in the coir fiber its self. It holds onto a lot of Sodium Na and Potassium K, it release these when exposed to Calcium Ca and Magnesium Mg. Good brands of coir presoak their products in a CaMg solution to prevent this called buffering, but as the coir ages it will have more and more sites exposed that need re buffering. When growing at home just adding a bit of CaMg into the mix is fine with some runoff. with out this step the medium takes in a lot of the Ca and Mg you feed your plants and releases a bunch of K and Na it does not need thus causing issues. The products you have posted look to be all Coconut Coir I don't see peat moss as an ingredient. they use the wording "Coco Peat" as some people call coir "coconut peat" or "coco peat" but it is not Peatmoss it is Coir. I don't know the brands your personally using. and if they have been washed and or buffered. You can add in fertilizers to anything so unless they say they are washing and buffering it. assume it is not and go from there. Or email the company and ask them if they do that. Last bit is PH, Coir tends to have a neural PH or around 7, and Peatmoss tends to be a bit more acidic around 4-5, companies will normally buffer their peat moss to offset this but like coir as it ages more it will become more acidic over time. I find any time I grow with peatmoss in my style of growing I run into low PH issues and its why I like coir more. But some Peatmoss mixed into the medium is ok, just can't be the main ingredient for me. Others has great success with it though using it exclusively, especially in hydroponic style setups.