many of the large aquariums have strikingly similar to real corals and polyps only man made, they scrub them to clean them. as the time goes on the paint fades, what kind of paint do you use to re-paint or touch up plastic or opoxy coral branches ect..????? im attempting phosphate removal media to correct algae growth however need to find marine safe paint or non-leaching paint, lead free i guess to start with??? any suggestions??