Feeding for a fiery Connemara?

[littlemissj]

I have a 7 year old Connie who is very forward and fiery.
He is a very good do-er, maintaining his native roundness through the winter on good quality homemade haylege.
I just want to make sure he gets all the vitamins etc he needs while being in this winter without putting any more weight on and making him any more hyper than he already is.
Can anyone recommend any supplements i can give him to keep him in top health? I've heard seaweed is good. Any other ideas?
Thanks

 

[NinjaPony]

I feed my Connemara unmollassed alfa-a, pony nuts then linseed oil for his coat and naf general supplement for his vits and mins. If yours doesn't need any kind of feed then substitute alfa- a for hi fi or similar.