Texture, looks like there are many holes in the cheese, kind of like the curds did not come together.
Too much acid, cheese has a sour taste to it. It does not have a strong acid smell, so I thought it might be over development of lactic acid.
I am making a new batch of Colby right now. I am going to try a little less culture and a little shorter ripening time. I think I will check the pH next time, to keep an eye on things.
I might not have cut the curd fine enough. There seemed to be more curds than would fit easily in the mold that I have.
Pressed with 20lb, then 50lb for 12 hours.
I am welcome to any help that people can offer.
Thanks John and FarmerJd for your thoughts so far.