Hyposalinity

cranberry

Active Member
I would never hypo a display tank, but when I moved cycled rock from a display to a 30 gallon for a hypo treatment, I never got a massive die off. My parameters never changed. I tested it with table shrimp and still never got an ammonia spike of any sort.... it was undetectable the whole time even after the volitan went in, so my biofilter remained intact. My SG was 1.009 the entire time.
Just sharing what I experienced on a number of occasions......
 

florida joe

Well-Known Member
Call me crazy but, Hyposalinity at the correct level for treatment 14ppt salinity (not Specific Gravity) will kill much of the micro-flora and micro-fauna on and in the rock as well as inverts. It will NOT destroy the bacteria that perform nitrification. So the amount of die off is predicated on how much fauna and flora you have on your rock. Please remember the ick parasite in its Encystment reproduction stage can last from 3 to 28 days on your rock. That being the case you can remove the rock from your DT, treat your DT and reintroduce the ick parasite BACK into your DT with the reintroduction of the rock but then again I may just be crazy Joe
 

spanko

Active Member
Originally Posted by florida joe
http:///forum/post/2900101
Call me crazy but, Hyposalinity at the correct level for treatment 14ppt salinity (not Specific Gravity) will kill much of the micro-flora and micro-fauna on and in the rock as well as inverts. It will NOT destroy the bacteria that perform nitrification. So the amount of die off is predicated on how much fauna and flora you have on your rock. Please remember the ick parasite in its Encystment reproduction stage can last from 3 to 28 days on your rock. That being the case you can remove the rock from your DT, treat your DT and reintroduce the ick parasite BACK into your DT with the reintroduction of the rock but then again I may just be crazy Joe
Which is exactly why we should perform Hypo in a QT or Hospital tank and leave the display tank fallow (without fish) for six weeks so the parasite runs through a life cycle and dies because it does not have any host.
 
R

rcreations

Guest
What Florida Joe said. It depends on how old your LR is as to how much dieoff you get. If you just bought LR and cured it or if this is base rock that was just put in, you won't get enough dieoff to cause an ammonia spike. On the other hand if you've had this rock for 2 years or more, then yeah... you'll get a big ammonia spike. There'd be lots of little critters living in it. Either way, it's good to take the LR out during hypo.
 
Originally Posted by spanko
http:///forum/post/2900106
Which is exactly why we should perform Hypo in a QT or Hospital tank and leave the display tank fallow (without fish) for six weeks so the parasite runs through a life cycle and dies because it does not have any host.
+1 on that one. That's what I did recently and it worked like a champ.
 

cranberry

Active Member
Which is why I waited and tested before I put the volitan in. One way to reduce the potential critter die-off is dip your rock in hyper..... alot of critters will bail. My guy recovered.... I was SO nervous!
 

florida joe

Well-Known Member
Originally Posted by spanko
http:///forum/post/2900106
Which is exactly why we should perform Hypo in a QT or Hospital tank and leave the display tank fallow (without fish) for six weeks so the parasite runs through a life cycle and dies because it does not have any host.
Henry are you agreeing with me? Could it be you are finally coming over to the DARK SIDE??????????????
 

spanko

Active Member
Originally Posted by florida joe
http:///forum/post/2900380
Henry are you agreeing with me? Could it be you are finally coming over to the DARK SIDE??????????????
Even a dark tunnel has light at the end. Of course it may be the train but.........................
 

sid2003

Member
My live rock has been in the tank for about 4 months. I only have coraline algae on the rocks, not too much growth. Here is my plan. I have placed my two clowns and inverts in a QT and I placed my LR in a rubbermaid container with an air stone to circulate the water. I am gradually bringing the salinity down with fresh water. I am going to keep the salinity low as I introduce the fish I plan on buying. So my display tank will become my QT. Right now the only thing in the tank is sand and some crushed coral. After about a month I will bring the salinity back up and put the LR back in the tank. Anyone think I am making a mistake or could this possibly work?
 
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