ANY veg is better than pellets as calcium content is measured 'dry weight' so think of water content added in.
Also try buying low calcium bottelled waters (usually the cheap end)
Please when looking at lists of supposed high calcium veg remember this is DRY weight - nearly all forage is better for a calcium bun than pellets.
Oh yes i know this, he only gets a few pellets for that reason :wave: but some things definitely affect him more than others. If i give him parsley or watercress it affects him the next day.