neglect and majanos

[marco67]

Ok I came across an interesting one yesterday.
I have a friend/ customer thats putting a new great room on the house that will house his new tank. About a year ago in prep for this we installed a new sump room with a 125 refuge and 125 sump. Back in May when construction started we broke down the main tank and moved everything to the refuge..............Last I saw it in July it was totally infested with majanos, thousands. Anyhow neglect continues throughout the summer and I go yesterday to start a plan to "retake" the system. Clean a small section of glass....Hmm? clean more....Hmm not a single Majano!?
I didn't do a full line of tests yet but salinity was at 1.032 and probably was higher at points. reactor is down as is kalk reactor (obviously with no top off).

The only fish in there are a hippo (not happy) and a maroon (looks fine).
I guess it's not out of the question that the hippo ate them, but more likely something to do with the water chemistry, high salinity? (I've seen reg aptasia killed off by very high salinity before...1.035-1.040)

Just though it would be something interesting to speculate about....

 

[delta]

Maybe some with Majanos could test in a smaller test setup?

 

[JayM]

I'll volunteer them to anyone who wants them!

 

[Aquaman_68]

sounds like a test should be taken...

 

[jbishop]

I hate my majanos and cant seem to find a way to get rid of them.

 

[Jim Tansey]

Whats the lighting?

Jim

 

[marco67]

Whats the lighting?

Jim

When the system was set up lighting was 2x250w lumenarcs. I am not sure is any set lighting schedule was followed (given the amount of build up on the glass I think there was some at least). It's possible the lack of light weakened them and then the high salinity put them under. It could also be lack of nutrients, this is a 250 gallon system with ~400lbs of rock DSBs in each tank and only fish (that I suspect were not being fed).

 

[delta]

When the system was set up lighting was 2x250w lumenarcs. I am not sure is any set lighting schedule was followed (given the amount of build up on the glass I think there was some at least). It's possible the lack of light weakened them and then the high salinity put them under. It could also be lack of nutrients, this is a 250 gallon system with ~400lbs of rock DSBs in each tank and only fish (that I suspect were not being fed).

Be pretty impressive to starve out a pest like that espaecially if anything else is alive

 

[marco67]

Be pretty impressive to starve out a pest like that espaecially if anything else is alive

Very true,
I'll be back on Monday for a complete cleanning and testing. Looking for any other evidence.

 

[JayM]

bump...blast from the 2008 past

Marc, did you ever figure out the mojano killer?

 

[marco67]

Not sure high SG or high temp, but they never came back.

 

[jtmac]

I was infested when I had my 72 about 7 years ago. At that time I didnt know any better and thought they were cool. It was a fish only with some gsp and xenia. I wasnt taking very good care of the system then and had neglected it. I had thousands when I lost interest and the salinity when up to 1.40 no top off no water changes no lights the xenia died off as did the gsp and the mojanos did aswell but the 2 clowns have been with me for 8 years now.. 7 years later there has been no return of them and im using 50% of the same rock. If I ever see one again I will yank out the rock since a know kalk paste doesnt kill them.

 

[Mini4x]

Hmm, I might have to try a trash bucket and do a MEGA-salinty test and see.

I have water I made a few weeks ago and never used and about 8 gals have evaporated.. have to get the old refractometer out and check it.. I was goign to toss it tonight, but maybe I'll try to kill me some majanos.

 

[jtmac]

IMO super salinity will kill anything if it isnt given time to acclimate to it

 

[WMass413]

Whats the best way to get rid of them or try and control them.