Back in the 1990's reefkeeping information was disseminated by a list-server, Reefkeeping mailing list. I got a lot of information and advises from this list. Even then, we trade coral frags. As you can see from my pictures, colorful coral can be keep. I use MH and VHO tube combination. Nutrient management was not up to par in compare to today standard. I had the Purple Acro and traded the rest of the frags. There are some wild colonies in the L side and R side pictures below. I love clams also. Back then I had a full house of clams. All five species of common Tridacna clams can be seen.