i want to make it look like blood. something less transparent would be great. something added to distilled water+pt nuke would be best, but a whole different approach would be ok too. i also need to get the color right if anyone has suggestions on that. i dont want to actually use anything thicker because it wouldnt run through the loop as well right? can i use oil in the loop or something or would that be a huge performance drop? any suggestions are welcome. 