Is this normal for Ginger Bug

Hi, I’m new to making fermented recipes and I’m not sure what’s good and what’s not yet.

I’ve started this ginger bug on the 28th of January. I made a big batch cuz I ended it buying a 2000ml jar by accident. I’m not sure if I’ve done it right or not. My aim was to make those probiotic sodas.

The bubbles in the photo I’m not sure if it’s mould or not. But i don’t think it smells mouldy.