I’m looking for a fiber supplement for my hamster’s diet.

[LemonSprite]

I’m getting my first hamster in a few days. I’ve done quite a-bit of research and feel pretty prepared. I understand that finding a hamster diet is difficult because there is no one store brand. Ive found a mix of “DwarfHamsterDream Basic” and “Harlan Teklad 8640” using this calculator https://onedrive.live.com/embed?cid=...deHeaders=True
With a 60/40 mix I have a decent diet. However, my fiber percent is concerningly low. I was wondering if anyone knows a way I can add more fiber into my hamster’s diet. Whether that is another seed mix or pellet, some vegetable or grocery food or to re-evaluate my food brands altogether. Any advice helps!