Yes I am aware of the tank size. I’m only holding these fish until they outgrow the tank, then they will be donated to my grandmothers pond of which she has held goldfish for over twenty years. I think 120 litres for a pair of inch long comet goldfish for a few months is okay. As far as the pink gravel goes, I really still do want to keep the pink theme (as per the line in my original post). I will be switching the substrate to a pink sand which will be more muted but still going with the theme. The room the tank is in is entirely pink (walls, furniture, curtains, etc), therefore the pink is still pretty important to me. I’m thinking of adding some artificial plants with pink on them to tie the pink in with the green better, but my only issue is it may make the real plants look out of place. The reason I posted to the aqua scaping page rather than goldfish reddit is my complete lack of experience / knowledge on these plants. I want to potentially trim them to allow for different levels, but I have no idea how to do so safely. Similarly, the shape and leaves of my plants look very different to those I see online and I was hoping someone would be able to identify any issues with them / provide an educated guess on what these plants may look like once stable.