How is his weight? (pictures)

I have been thinking Flash looks like he's losing weight, but everyone else said he was fine. We have had a very hot spell here, so the horses are using more energy. He currently gets 2 cans of Blue Seal Carb Guard a day (sorry, the BO doesn't weight, but I think it equales approx 5 lbs per day- weighed them a while ago and think that's what it was), and 6-7 flakes of grass hay per day. We just cut him down from 7lbs a few months ago as we didn't want him getting porky, and his weight was great (we had to bring him up about 300lbs).
So, if you guys could let me know whether I'm just being paranoid, or if I should up his grain a bit that would be great.

I think he looks great, but saying that I have a serious porker so I am a touch jealous I think adding some more muscle to his butt would make him look more filled out in the rear. Otherwise I think his a very handsome healthy looking boy

Thank you! His ribs are slightly visible, but he is very slab sided, and the vet said they will probably always show last time she was out.
I have been trying to get some muscle in the back end, as its very weak, but doesn't seem to want to get on there. His neck and shoulders are muscling up great, but the back end is another story. Hopefully once we get our w/t/c down pat, it will help.

He looks healthy to me. Sounds like you are working on exercising him, so maybe as he gets more and more conditioned he'll fill out a little more. Keep up the hard work! He sure is a nice looking boy!

I'd say he's about perfect. If you go by condition scoring you should be able to feel rib but not see them. There should be no protruding backbone nor a dip in the back. His hips are lean but that should be muscle not fat anyway. It's harder to tell from pictures than in person but I would be pleased with his weight. I wouldn't want him to drop anymore though.

Building muscle in the hind takes time and specific excersises. Backing( at least ten steps, move forward and repeat ten times, trotting or slow loping up hills/slopes(start with 3 repetions adding 2 each week up to 12 repetitions, collecting and asking your horse to sit and tuck under while slowly descending, slow loping in small circles, turns into a fence forcing your horse to stop and turn on the hind all will help to develop those muscles. Collected flatwork will help, too. Start slow and increase slowly muscle strains are painful and can take a long time to heal. Good luck and keep us updated.

I think he looks great! So handsome :) I would say at the perfect weight.

Also think he looks fine. Wouldn't want him to gain any more though. There's no reason you need to worry about a bit of weight loss either. In fact, evidence suggests that horses that go through 'bad seasons' regularly, rather than those who are kept in 'good' condition constantly, have healthier metabolisms.

Good that your vet pointed out just because you can see ribs doesn't necessarily mean a thing. While *generally* you should only be able to see the ribs lightly through a summer coat, this is general & they're all individual.