Shrimp Molting Issues

[Liquid Hobby]

My cleaner shrimp is healthy, eats well and molts regularly. However, recently after each molt his antennae do not grow out to full length. He has had 6 little 1 inch nubs for the last several molts.

15-20% weekly water changes
SG: 1.0255
Ph: 8.3- 8.5
Alk: 9.6dKh
Mag: 1450 ( a little high, I was dosing and haven't in 10 days)
Calc: 380 (I dose a balanced part A and B additive every day and do not see any effect in calc levels)

What is this a symptom of? What am I missing.

 

[Liquid Hobby]

New params:

Alk: 10.6 dKH
PH: 8.5+

anybody...

 

[purplehaze]

Are there any black spot on the antennae or shrimp

 

[this1fish]

not to hi-jak but my cleaner shrimp has that on him but it goes away after a fresh molt yet comes back in a while. So what's going on?

 

[Liquid Hobby]

No black spots.

Everything is normal except for those little nubs...

 

[purplehaze]

<a href=showthread.php?s=&postid=9413032#post9413032 target=_blank>Originally posted</a> by this1fish
not to hi-jak but my cleaner shrimp has that on him but it goes away after a fresh molt yet comes back in a while. So what's going on?

It is vibrio ...not much you can do about it...keep the shrimp well fed and the water quality up. Where excactly are the spots.

 

[purplehaze]

<a href=showthread.php?s=&postid=9417514#post9417514 target=_blank>Originally posted</a> by Liquid Hobby
No black spots.

Everything is normal except for those little nubs...

You have a pic? So how often has the shrimp moltet and had this problem?

 

[Liquid Hobby]

I could produce a picture, but it'll be a few days.

Molts every 3-4 weeks but it's the last 2 molts that this issue has shown up.

 

[purplehaze]

<a href=showthread.php?s=&postid=9428050#post9428050 target=_blank>Originally posted</a> by Liquid Hobby
I could produce a picture, but it'll be a few days.

Molts every 3-4 weeks but it's the last 2 molts that this issue has shown up.

Are you sure about the molting period..should be around 14 days or so..depends a bit on temp..

Everything might be normal again after another motl..just keep an eye on the shrimp..

 

[Liquid Hobby]

you're right, it does seem to happen around every 2 weeks or so...