Acro rtning on bottom growing on top???

[marine_freak]

I have a plana that has super bushy polyp extension and growing 1/2 way up the the acro and the bottom has rtn'd..... the rtning seems to be very slow at bottom but the top half is gorgeous with long polyps, good growth and color..... should I cut the rtn out and re-glue or should I just let it go??? Any advice would be appreciated.

 

[kenettson1]

interested in this topic as i have had the exact same problem a few months ago.

 

[clkwrk]

Not rtn but stn and it could be a number of things .

Alk too high /too low. Or flow

 

[dots]

flow, phospates, alk.....I heard phosphates do this alot

 

[marine_freak]

Still out to lunch on what to do about it.... let it go or chop and glue the good portion??

 

[clkwrk]

If its slow I would correct whatever is causing it. Try giving the coral more flow around the base

 

[PnoyReefeR]

I am also tagging along with this thread I have a colony that I just noticed yesterday and it was all the way at the back. The base is fine but the middle part is turning white. I put him all the way to the top with high flow and see if it will change in a week....

 

[robitreef]

I have a staghorn that did this around the time I used some red slime remover. My alk was low and I was bringing it up. Within a few days the polyps turned from brown to green and the tips turned a baby blue. I still have some recesion, but the weird thing is that it is a band of tissue loss in the middle to upper part of the base. The lower part still has tissue, and I haven't seen any additional recession. There was also recession on the bottom of the branches, but that is possibly due to lack of light due to shading (?).

 

[duec22]

I had this happen to a few of my SPS a few months back...I let the salinity get too high and alk too low...now I've got a refractometer and check alk every other day....almost everything has stopped the recession and most have regrown. I would just suggest getting all the parameters in line and only frag is the STN doesn't stop.

 

[NuclearReefs]

I have a large piece that did this.. I left it alone and the top keeps growing and the bottom is actually starting to over grow the spaces that had tissue loss.. Its a weird way that this started too,, then stopped.. I didnt increase the flow though and seems it helped

 

[Frankysreef]

High alk did this to me, and I left it alone and it is now encrusting.. but then other corals I had to frag... so it depends.... Measure the stn, and if it doesnt stop .. frag.

 

[marine_freak]

Thanks guys a couple months ago I had a kalkwasser accident spiked my PH to 9.8 accidently while I was not home it was the last acro to recover the polyps recently just started to really get bushy again but as I said the base has stn'd to the bottom of the branches I will increase the flow and see if it helps also... I will keep this thread active to update everybody on how it is going.

 

[Kent E]

I had this happen when I had red bugs.

 

[kenettson1]

This happened to me when I changed several things at once; I think it had to do with adding phosban. Thats just my feelings on it and I dont have a shred of evidence. I now use Rowa and it doesnt shock anything visibly. Now corals are starting to show polyps again although almost all completely died. If you see continuous recession I would frag them.

 

[fishieness]

ive seen it happen a lot to larger colonies, esspecialy ones that branch our and grow really this like table acros, where they just shade the base entirely so it died.

 

[marine_freak]

Has anybody had success after they did this??? Regrowth or recovered fully etc??

 

[clkwrk]

Yes I have regrown a 85% dead colony to 100% tissue

 

[clkwrk]

<a href=showthread.php?s=&postid=8173908#post8173908 target=_blank>Originally posted</a> by fishieness
ive seen it happen a lot to larger colonies, esspecialy ones that branch our and grow really this like table acros, where they just shade the base entirely so it died.

My large colonies just turn white in shaded areas polyps are still out . Good flow will make that possible.

 

[Zoom]

Wide temp fluctuation always give my corals STN..