specs for logo creation
 

does any one know what the specifications are for the logo to have it show up correctly in the crystal? width, depth, transparency, file type, etc.? thanks so much

Logos which are 256x256 work best. Any bigger than that and the load time increases, while some bytes would be thrown away. Leave plenty of room around the edges so that the image has some space around it. PNG is the preferred format, since it uses compression and allows transparency. 16 or 32-bit depth will both work.

Transparent PNG-24. 256x256.

Here is my guide for making logos for MA2 as well as sample logos:
https://www.feldoncentral.com/Sachs/malogo/

It needs to be updated for MA3. Specifically, ignore the instructions about where you must save the logos. The Logo feature in Marine Aquarium 3 allows you to add logos directly within the program.