Reddit mentions of uxcell Plastic Fish Tank Aquarium Accent Underwater Plants, 11.8-Inch, Purple

Hello Shep! OP, hope you don't end up so busy saving the galaxy you forget to feed her :(

As for fishtank decor I couldn't find any rocketship ones, but I did find these that look cool, if you'd like to go for sort of an "antique Prothean" theme.

https://www.amazon.com/Ble-Ornmt-Ufo-Crash-Cave/dp/B00FKVFCKC

https://www.amazon.com/RIBBON-PRODUCTS-030157015909-Environments-Crashed/dp/B00C3ESXYG (this one looks great for an "ancient" look but it's small, the other one seems to be a lot bigger)

https://www.amazon.com/Uxcell-Plastic-Aquarium-Accent-Underwater/dp/B00H56CBVI (these look like the trees from the Presidium)

https://www.amazon.com/JW-Pet-ActivAir-Floating-Satellite/dp/B000FHGMZU/

https://www.amazon.com/Glowing-Artificial-Decorative-Aquarium-Ornament/dp/B00ST6SX24

https://www.amazon.com/Uniclife-Artificial-Decorative-Aquarium-Ornament/dp/B01EY327BI

https://www.amazon.com/Uniclife-Jellyfish-Ornament-Decoration-Aquarium/dp/B06XRNV4G2

https://www.amazon.com/Uniclife-Silicone-Decorations-Artificial-Ornament/dp/B01MSTXAC5

https://www.amazon.com/Uniclife-Ornament-Artificial-Decoration-Landscape/dp/B01N6BMKCL

Glowing plants would definitively help bring up the "alien" look I think. Uniclife has a bunch! Or a "Kahje" look if you put in some pink jellyfish alongside the "Prothean ruins" :P

Here's the links for the two trees: https://www.amazon.com/dp/B072N7X4ZT/ref=cm_sw_r_cp_apap_h2cg4x8841lIn
https://www.amazon.com/dp/B00H56CBVI/ref=cm_sw_r_cp_apap_tvS8jRwNMj66v

And the tank is a 30 gallon rimless jvj

Can you guys help me find a green leaves version of this? It looks amazing but, I can't find a green one anywhere.