That is some good xray vision that you have. haha.
@Bigfish if there are membranes hiding back there you should definitely change them and the rest of the prefilters as well.
Looks great! Will you be making a cover for the food hopper? Also just a thought but but maybe makes it circular so you can find a common sized ring to seal food from moisture.
Yes but not at very high volume. I've burned out many kamoer fx stp peristaltic pumps. They max out at about 120ml per minute. The pumps run about 300 each I think.