Sudden STNing on a few acros

[duke62]

Tanks been up and running for 3 years SPS for around 1 year 4 months. My alk is around 8.5 calcium 450 nitrates about .05 zero po4 using hanna and salinity who knows at this point. I have been noticing some small areas of STN for 3 weeks now on certain corals then i had a skimmer overflow while i was sleeping and about 2 gallons of ATO was released which has kalk in it so i looked carefully in the tank and noticed my red planet had some stn at the base,a hairy acro not looking good a unknown acro a milli and my joe the coral colony has losy alot of color and looks extremely pale. Now i have been using distilled water to check my calibration on my refract for over a year and 2 months ago decided to use calibration fluid well the fluid showed my salinity as being 1.029 so over the next 6 weeks i began lowering it till i reached 1.025 on my refract. Well i had 2 LFS check my salinity which they said it was at 1.021 and when i used distilled it said 1.019. Now my SPS were looking great before switching to use calibration fluid and it took over 6 weeks to lower so i know i didnt drop it to quick and i think the 3/4 skimmer over flowing and ATO putting in 2 gallons of water was coincidental on me seeing the SPS stning. Can a salinity of 1.021 1.019 be doing this to my sps or should i be looking into something else causing it. Now i am using some zeo products ,flatstop,k balance,snow and zyme but been using these products for 9 months or more. also i couldnt find my normal sally mysis shrimp so i bought some other brand but the LFS freezer broke and im not sure if the new shrimp i bought was bad. i didnt look good. i used it for 2 weeks then decided to go get some better looking hikari food. i dont think defrosted bad mysis could have done it. The STN is extremely slow

 

[Battlecorals Verified Sponsor]

What brand of solution? I had a similar issue with my refracto and came to learn there was a bad batch of sybon 35 ppm cal solution.

This is the batch # R1G01320

 

[duke62]

holy SH!& thats the solution i have

 

[Chameleon]

hope things turn around. I had a similar problem recently and am still fighting stn...

 

[duke62]

so is anyone liable for my corals dying now? i mean it was a companies fault my corals are STNing. i just tried contacting the wholesaler who sold me the solution and her response was "what do you want us to do just raise your salinity fast" really!!!! she also told me the calibration fluid was thrown out when they got the recall. WELL what about a courtesy call to your customers

 

[duke62]

oh yeah and low salinity wont cause my SPS to die they will just be unhappy???????

 

[Battlecorals Verified Sponsor]

Pretty disappointing that the one and only function of the solution is wrong. I mean to put that much faith in a 1.00 bottle of whatever.

What got me is that I started reading about people first testing with 35 ppm as opposed to di water and it always read high. And it was right and that you should always go with the solution over DI water. I was pretty conflicted before I finally called premium and he confirmed that there was a bad batch.

I did have some issues with a few sps as well but am happy to say that things have bounced back. You will have to fight the ugre to bumb your sg back up rapidly though. Just do weekly WC's with correct water and it will come up safe and slow.

 

[duke62]

Someone on another site i believe told me to add 1.026 of salt water in my top off. Should i do this? And that is where i got my solution from premium

 

[djmatteo]

When my salinity sways, I usually add my premix salt directly to the sump, elevate my water level a bit and turn off my ATO. Then as evopration over the course of the day occurs the salinity will rise, similiar to adding directly to ATO but then I dont have extra salt solution in my 10g tank.