Honey is usually very healthy, but if you have candida, it will likely feed it too much. It's up to you and whether you feel you have bad enough yeast issues or not. It's not mercury that's the problem, but yeast typically goes along with mercury (and that's the problem). Some people find honey is as bad as sugar.

Fruit too. That can feed candida as well, as can potatoes, corn, peas, beans, carrots etc. Anything sweet/high carbohydrates will feed it. Grains also. Though non gluten/non wheat is much better option, they can still feed it sometimes in someone with a bad case of yeast.

I used to be able to handle honey, fruit, non gluten grain and milk and even potatoes (potatoe chips too), even though I had mercury and candida. I obviously did not have candida as badly as I have it now, but I certainly could NOT eat gluten, wheat or sugar or yeast. So not sure how on earth i managed to eat the other stuff, but obviously it was healthy enough not to have too much of an impact on me. natural sugars are far better obviously and much more slowly released into the system.

These days I cannot do that and due to infections, my diet is excessively restrictive, leaving me with only meat, eggs, yoghurt, raw nuts and low carb vegetables to consume. If I deviate off this, even slightly, I'm in trouble. Before I had mercury, but I did not have these infections, so I got away with more.

...you'll be the best judge for yourself.