Looking good like the aquarium dimensions and that light.
I used that filter prior to upgrading to an Eheim 2215 (with 2217 impeller). It was an okay filter, but not the best once fully planted. It just doesn't create enough flow and I ended up with many areas with no flow. This translates to algae growth in the long run.I would not add fish until you check the parameters. The sponge is still inside the filter, it would be OK for juvi shrimp, but if ever have babies, you will probably want to put something in front of the filter..
Taptalk via mobile phone, watch out for spelling errors. ;-)