No growth in months. Is it "normal"?

KonradTO

Valuable Member
View Badges
Joined
Aug 11, 2021
Messages
1,254
Reaction score
702
Location
Germany
What state or country do you live in
Other International
Rating - 0%
0   0   0
Hi all,
I had a 32g tank (+15g sump) since August last years - about 10 months - and I had different problems along the way. Low nutrients and dino first, high nutrients and GHA later, many frags died, clownfish died for some bacterial infection, and now that I can control better GHA and I have good nutrient levels (2-3ppm NO3, 0.04 ppm PO4) I had my ATO system failing twice in a month, with this last time causing a stylo to die and damaged a pocillopora frag.
The only frag which survived and looks ok since the beginning is a people-eater red zoa colony, made of 7 polyps. Still I have seen no growth since then, they look ok most of the time, are open but they do not spread. I also had few frags of palythoa (I think they are called nuclear green something) and a duncan for a month and they are well open and eating but do not spread.
Is this normal considering what I mentioned above, and they just need few months of stability, or for such corals it is unusual to not spread?
As far as I know they should grow like weeds..
I did an ICP test recently and the only values that were a bit off are: a bit of copper caused by my RODI system (2ug, apparently not enough to cause issues), high silica (400ug/l) and tiny bit low iodine (which I understand it should be replaced anyway during WC).
Nitrates hover between 5 and 2ppm, when they get lower I dose because I fear to boost GHA with increased feeding.
I feed corals 2-3 times a week a mix of different things (frozen, powder, pellet) mainly from the brand Microbelift, something which is quite common here in EU), and fish every day 1/4 of mysis/brine cube. I keep Ca, Mg and Alk quite constant with a doser, with the exception of when I had the ato failing and everything dropped quickly.
In terms of light and flow I am still trying to find my spot, but I would say I keep light on the low end (viparspectra without lenses kept at low settings) and flow is normal, no crazy swoosh but noticeable movement. I have been told that they are stretching for light a bit, but when I moved them higher in the rockscape the size of the head shrinked but the "stem" remained elongated and they looked p***d off. Maybe I moved them too high too fast?

Is there anything obviously wrong I do?

2_5474133610585921505.jpg
 
Also I forgot to mention that I have something that looks like green hydroids growing on the plug
 
Do you happen to know the average par your zoas are getting? I would try to increase lighting
 
Do you happen to know the average par your zoas are getting? I would try to increase lighting
No unfortunately no PAR, but it is similar to my KessilA160 at 50%. I am increasing 1% every day to be on the safe side, but I have seen no difference so far.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
Back
Top