I have had a lot of different Seriatopora species (hystrix and caliendrum) since I start this aquarium. They are fast growing and rather beautiful sps corals. The setback with them is that they grow like weed but suddenly they no longer want to be part of your aquarium - instead, they bleach and die within a day. Its unclear if it is because of water parameters or caused by microorganism or a combination of those two. My believe is the later - its a combination.
Last time was a year ago and I had to throw away a 20 L bucket with Seriatopora and the tank looks like this after the slaughter
A couple of days ago - its looks like this
A rather good growth - but yesterday it was time for bleaching again and reconstruction of a part of the reef.
This part has to go. However - I do not know if I have stopped the process or not. The coming day will show if its over or not. One of the reason this time was that the left colony had grow up over the surfaces
Sincerely Lasse