Very nice!
A couple of observations, please don't take them as criticism...
- It is very risky to add new fish straight into the main tank. Too high a risk of introducing serious diseases. Different people see this differently. For me, at least 1 month in QT, longer if there is suspicion or evidence of actual problems.
- If you add more plants (or some plants attached to taller driftwood or rocks), the fish will feel more at ease and reward you by coloring up beautifully. This is particularly true of the rummy noses and Colombians (with "O"). By the way, it seems your Crypts are growing fairly well.
- You may consider a black background for the tank. Easily done quickly and cheaply. The living things and ornaments will stand out and you won't see equipment and others.
I don't have any rummy noses right now, but I have had them in the past, and would love to get some again.
Below, my 75g with Colombias, SDs and neons (+ copies and bushy noses).
Cheers!