I’m also a happy TC 30 user. Prior to moving to the current farm… I used Legends Low Carb RB (I try and keep sugars as low as possible as a general rule) and also liked it. But the closest feed store only carries the TC 30, and that’s fine. Both are quite similar.
My two mares at home right now have only been in light work this summer, are in mid to late teens, and are out on great pasture 24/7, with a run in, fans, and a grazing muzzle on the pony at all times. Both have great looking top lines though. And good coats and hooves. They are both VERY easy keepers though. I do add a small amount of Fiber Plus to their daily RB (SS brand… it’s beet pulp based, with a decent amount of fat), as they like it a lot, and it keeps them from objecting to straight RB. Adding a little sweet feed could work just as well… I prefer Fiber Plus however, and both are sassy teenaged mares. If they lost condition at all, or if I increased their work, I would probably up the Fiber Plus a bit. I also feed a SmartPak ground flax supplement daily, and MSM. But that’s it. Will start feeding hay in the fall, and over winter as pasture goes dormant. And up the Fiber Plus as necessary over the winter. With the pasture they are on at present though… no need to feed hay.
They have access to a mineral block and white salt block as well, and electrolytes in their feed during the hot months.
I also wet pellets daily, and stir everything. Gets supplements mixed in enough, and softens the tight RB pellets… the Fiber Plus breaks down easily. At first my older horse mare was a bit grumpy about wetted food… she’s gotten over it though. I just like to try and reduce any choking risks, and ensure they don’t sift the MSM and electrolytes out at mealtime.