First time using bark

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I repotted my Sanderara today . I didnt really want to disturb it, but the new growth was pretty high up, and most of the roots werent growing into the pot, just outwards, so I decided to re-pot.

However, this time I chose to use a small bark mix. In the past I havent been lucky with bark, but I would like to give it another try. I broke a few of the roots tips, but there are many more just starting.

Wish me luck!
Thanks,
Cam

Here are some pictures: