What problems will high salinity cause? - Got a new refractometer for christmas

M

MLACAZE

[Got a new refrac. for Christmas and it show a Sg of 1.030 in my tank. I did calibtare it before use. I have been using a swing arm type for the last year and it read different from a glass hydrometer I had. Based on that I just went with consistency rather than accuracy.

Anyway, now that I have a good tool to work with I will slowly get the SG back down to 1.025.

My question is could the high Sg be the cause of the HA problem I have been fighting?

Mike]
 
[1.030 isn't that high. Some parts of the ocean are up near that, I belive the red sea is close to that.

My nano probably got to 1.060 and the xenia melted, but came back a week or 2 afterwards.

Morale of the story, don't let your 10g tank eveporate 5 gallons of water :)]
 
[I have never read anywhere that high salinity causes HA. mainly bad lighting, and poor water quality. Get thought trates down!]
 
[We all should strive to match NSW.
Below info is from Randy Holmes-Farley
http://www.reefkeeping.com/issues/2004-05/rhf/index.htm

Natural ocean water has a salinity of about 35 ppt, corresponding to a specific gravity of about 1.0264 and a conductivity of 53 mS/cm.
As far as I know, there is little real evidence that keeping a coral reef aquarium at anything other than natural levels is preferable. It appears to be common practice to keep marine fish, and in many cases reef aquaria, at somewhat lower than natural salinity levels. This practice stems, at least in part, from the belief that fish are less stressed at reduced salinity. Substantial misunderstandings also arise among aquarists as to how specific gravity really relates to salinity, especially considering temperature effects.

Ron Shimek has discussed salinity on natural reefs in a previous article. His recommendation, and mine as well, is to maintain salinity at a natural level. If the organisms in the aquarium are from brackish environments with lower salinity, or from the Red Sea with higher salinity, selecting something other than 35 ppt may make good sense. Otherwise, I suggest targeting a salinity of 35 ppt (specific gravity = 1.0264; conductivity = 53 mS/cm).]
 
[I have no detectable po4 or nitrates. I am using a phosphate sponge. I have done all the right things but still have GHA growing back in the tank. VHO's are 6 months old. Turbos or tang will not touch the stuff.

?]
 
[Using Phos-Zorb from Dr foster/smith, got a fuge full of Cheato. Tank was GHA free for almost a year then just the last 2 months it's been a problem. Over Thanksgiving I pull all the LR out and scrubed it. Did a massive water change, probably 75% over 3 days. Everything was good untill about 2 weeks ago and it (GHA) starting popping back up.

R/O DI water, new filters]
 
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