I haven't put any reef rock in this tank for 2 years only fish.
I have a breeding population of brittle starfish in this tank.
Now it seems I also have urchins that are establishing them selves in this tank.
I had to catch a Christmas wrasse that I grew up as a baby out of this tank. Took out all the rock to catch it.
Imbedded in the small crevices of the rock are baby sea urchins. I have about eight urchins that have been there for ever.
I only added one armored urchin a few days ago.
One filter I haven't changed in a year the other one only gets changed about every 6 month.
Water changes on this tank 10 gal
every 2 weeks. Counted about 50 tiny urchins.
I guess the urchins are doing ok along with the brittle stars. The tank is a 50 gal
I'm going to clean the filter I haven't cleaned in a year to see if its holding any surprises.
I just released a load of fish that grew to big back into the ocean reserve area from my tanks.
I have a lot in QT tanks. As soon as there in the main tanks Ill post Pics.