[fishytime]

Originally Posted by Titus99

This piece in question is solitary. No others within 4/5". There is great flow and I have tried changing. Lighting hasn't changed. The only thing I would say changed other than rock was it along with all other coral was dippers in RPS

There is a small hint of green at the base which is a good sign I guess


Doug. With the thought on the rock. I can't see benificial a in center of rock doing alot of good with out flow through it to benifit what is on the exterior. Fish/coral/nutrients. After all shouldn't that water pass buy the benificial to process it.

And even though you said coraline grows where the light it it still cover pores eventually making rock smooth and coated like having been painted. I also have a orange coraline that grows in low light. And dies when exposed to higher light level

I only question in case I do indeed go back to live rock. As I want my $$$ to count

I may just be talking out of my arse here because I am in no way an expert on hydrodynamics but it could be similar to the aerodynamics we see in our houses.....you have that window in the bedroom on the second floor cracked and when you open the window in the basement, one of the doors in the house slams shut?.....I would venture a guess that if the center of live rock was not "live", then it would turn black like a stagnant pocket in a sand bed or parts of live rock that are buried in the sand....

Originally Posted by xenon

All corals react differently.

Some species can be very hardy while others are super sensitive.

agreed.....I know that for myself, montipora seem to take forever settling in, recovering from being fragged or a change in conditions.....Nick, this wouldnt happen to be a smooth bodied acro would it?....just asking because as a general rule, most smooth bodied acros are tricky and finicky at the best of times, let alone in a newish tank scenario.....

Originally Posted by mseepman

Interesting read on your thoughts on Dry Rock Doug. My entire tank is composed of it in some way, just varying periods of time in the water. So far, I have no bad algae and no problems other than low low ALK. I do use Prodibio religiously though, so maybe that has helped.

the prodibio is likely helping and you said that only a percentage of the rock you used was Marco rock.......annnnd you still have a relatively small bioload for the size of the system you have