Coral recession questions

[cambo123]

First, and most important, my frogspawn. I took a look at him today and noticed something I have never noticed before, the tissue around the base has receded about 3 to 4 mm. It looks fairly new and is only at the base. The coral otherwise looks beautiful. I have a theory that it is being irritated by the red tube worms growing at its base. Any thoughts.

Second, my brain coral has what seems like a mucus on its base, I am not sure if this is normal or not. Any thought?

Thanks
Cameron

 

[cambo123]

Better pic of frogspawn

 

[chrisfont23]

Re the frogspawn. This happened to me with a torch. Took forever to realize it was not getting enough flow. I used a little Strontium at 1/3 the dose, per rec from my LFS. Increasing the flow and using the Strontium together saved it.

 

[cambo123]

Rearranged the rock work a little bit yesterday and did a big water change. I am going to keep a close eye on both of them. The white area on the brain coral is definitely tissue recession. I have been slacking a bit on water changes and am going to pick it up to once a week for the next month.

 

[cambo123]

tank pic

 

[FuGu2]

Check your iodine levels.

 

[cambo123]

Thanks will do

 

[JRR1285]

Same thing happened to me over the last few weeks. I lost about half of my Lord Acan to a slow recession that finally seems to have stopped. I also lost a torch to BJD during the beginning of the recession but I don't feel it is related.

I had been pushing off tank maintenance followed by not having the time to do much about correcting what was going on. I think I have it under control after doing a lot of maintenance and getting my flow up. Even with two returns and 2 nano koralias along with a 750 I don't think I had anywhere near enough flow once the pumps get dirty. They appeared to be pushing half or less. Water changes got my parameters back in check along with some dosing.

 

[victor escobar]

The first thing I would do is to check alkalinity * calcium + Magnesium if everything is correct then I would look for other reasons.

 

[cambo123]

Did another water change...4 gallons today, and 4 last saturday. Will do a small 2 gallon this sunday. LFS confirmed my calcium/alk readings 420 and 8.5 respectively. They measured magnesium to be 1400. Nitrates are 0. The guy at the LFS said that he sees this kind of behavior with non branching frog spawns if they have been moved recently. Not sure if this is true, I rotated him to avoid irritation with another rock about 2 weeks ago. Again polyps look fine. Recession on brain seems to have slowed however have lost a few more millimeters to the frogspawn.

 

[victor escobar]

one question:

Do you have resines removing phosphates? some times if the resines are changed the concentrations go down so quickly that there could be problems with certain corals. (not longstanding problems as in your case)++

Another thing 0 nitrates is very very low (only the minimum taht the test can read) and LPS are a bit responsive to so clean water.....

 

[chrisfont23]

one question:
Another thing 0 nitrates is very very low (only the minimum taht the test can read) and LPS are a bit responsive to so clean water.....

I run my 900g tank with NO3 between 20 and 40, simply b/c I cannot discern the difference on the API card. I have all LPS in the tank less a single green monti that grows ridiculously. In fact, it got so big my BHT just refragged it

Every tank is different, so take it for what it's worth.

 

[cambo123]

The thing is 0 nitrates has been pretty consistent for the last 8 months. I honestly wonder if my salt mix was a bit off. I noticed that corals just didn't look as happy last month. Just got a new bag and everything seems much happier after the water change. I am crossing my fingers that the frogspawn and brain recession was caused by stress do to rearranging the rock work.

Regarding the resin, this is a very simple setup. No sump, 1 power head, 1 heater, ato, and a large Tunze in-tank skimmer.

 

[cambo123]

Guys I have an update here. I am still a little concerned so please advise. I have for the large part lost the brain maze coral. I am still baffled on this but it was a small frag so NBD. My frogspawn continues to show gradual tissue recession up its stock. I have checked parameters and checked parameters. I have had the LFS check the parameters as well. Everything continues to check out. Everything otherwise looks fine. Even the frogspawn continuous to look beautiful but I am concerned. LFS insists this is normal behavior as they grow. I am skeptical. Picks in a min, rocks have been rearranged for more ideal flow

 

[cambo123]

Recession up the stock is the better part of 1/2in I would guess

 

[cambo123]

Pic with recession

 

[cambo123]

Shoot one more try

 

[cambo123]

anyone?