Hot water is working fine - thanks for your help on that. Since I got such a great response on that - I’ll try another.

I got this bank foreclosure 3+ years ago with no working appliances, barely an infrastructure, well and plumbing issues. It looks like a ranch, but technically it was a single wide trailer set on a beautiful foundation crawl space, that was widened in the back, the roof removed and replaced by a pine Cathedral type ceiling, and then a second unit added (on cement slab), and a two car garage. So I’m dealing with a combined second unit, part trailer infrastructure (plastic piping hoses), part house infrastructure (copper).

The well had problems and its pump was clogged, screen shot, and it brought all kinds of crap into the house. DEP had two tall filters in here to clean up an oil tank spill from the previous owner. Those tanks were absolutely clogged with crap within a year, which was unheard of.
I lost cold water to the kitchen, the shower and tub barely have any pressure on the trailer side of the unit.
So last fall, the tanks were removed, the water pump was replaced, and raised a few feet out of the muck, and water is running in clean again. But there was a lot of muck coming through. Still no cold water in the kitchen, barely any hot water, no bath pressure in the trailer side. It is clear that there is one feed to these three areas that must be clogged.

I know its common to blow the hoses through (not copper piping on this side), yet they are so clogged and tiny, I am considering replacing these hoses, but am wondering that if I go up an eighth of an inch in diameter, will that potentially increase or decrease the pressure?

What I’m thinking of doing is to remove one of these hoses going to the tub, and the connection system that feeds three areas, bring it to Lowe’s, replace those exactly the same size, but also get one hose slightly larger in diameter so I can try it out before replacing the other hoses.

I am on an EXTREMELY limited budget - officially broke, so I’d appreciate some creative elbow grease type of suggestions. I have some decent tools, but with school starting in a month, I need to bite off only what I can chew so that we have water. We’ve had to go long enough stretches without it. Not good for kids!

Thanks for taking the time to read this, I’d appreciate any opinions - yes, I know, I need a plumber. Can’t get anyone out for small or budget jobs.