Cali Kid Corals

Alk consumption gradually decreasing ..

newfly said:
Yes. Fresh sw have high ca and mag. I’m using aqua forest salt
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I do not think so - look at their website. I do not know any good salt that runs these high numbers. Too high CA precipitates out which is not desirable. This is from the AF website but seems like it it could be your salinity.

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I still lower the salinity a tad. I read up on high ca (500) and mag (1500) level , and most ppl think it’s not an issue.

I’ll leave it and let it come down naturally. I’m going to leave town in a week and hate making more drastic change.
 
newfly said:
updates

Monti sentosa colony continue to have small sign of stress. Turning white at a corner. Nothing major yet.

Parameters is ok.

Alk 8.3
Phosphate 0.02 ( not running gfo, just carbon)
Nitrate 6.5

Alk consumption stabilize so far. Now dosing 65ml soda ash daytime and 1.4l kalk at night.

Some early cyano/dinos . Running a small 7w UV.
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Listening to charles delbeek at HTA yesterday was really eye opening, I think low phosphate is your issue. Using the molar ratio formula, 6.5N divided by .02P, times 1.53, puts you at 497.25. Charles showed us slides showing that reefs are anywhere from .8 or so to mid 30s, and our tanks should be around 50-100, so you are pretty high.

.1 phosphate would put your ratio at 99.45
 
Fish Boss said:
Listening to charles delbeek at HTA yesterday was really eye opening, I think low phosphate is your issue. Using the molar ratio formula, 6.5N divided by .02P, times 1.53, puts you at 497.25. Charles showed us slides showing that reefs are anywhere from .8 or so to mid 30s, and our tanks should be around 50-100, so you are pretty high.

.1 phosphate would put your ratio at 99.45
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I just measure the tank and it’s at 0.06 . I expect it will increase with heavy feeding and no gfo. I’ll let it ride.

I’ll get the ICP in a couple of days. Hopefully it will shed some light into the issues.
 
newfly said:
I just measure the tank and it’s at 0.06 . I expect it will increase with heavy feeding and no gfo. I’ll let it ride.

I’ll get the ICP in a couple of days. Hopefully it will shed some light into the issues.
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I would just be aware if nitrate rises as well. Just make sure to use the formula nitrate divided by phosphate multiplied by 1.53. You want to be below 100, 50 is great
 
The point of my salinity suggestion was that if the device you are using to measure is measuring low, then when you bring your tank or new water up to target you are actually going higher than target. This will cause your Ca and Mg to be higher than you expect in both your tank and your new water (like you were reporting) since they come along for the ride along with all salts.

So with the examples from your pic, If you are targeting 35 ppt, you are actually bringing it up to like 37 ppt due to the mis-calibration. This difference could account for your high Ca and Mg without looking for a more exotic reason or taking any aggressive action.

I wasn’t talking about those being dangerous levels, either the salinity, Ca, or Mg. Since they aren’t.
 
Sentosa seem to recover but stylo now showing sign of stress. Arg…

ICP results attached.

We know about high salinity (fix) and low phosphate . Low in some trace ( iron, Fluoride, iodine …) , high in Zinc.

I bump up my trace elements dosing.

Anything else stand out I should address?
 

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Kind of a reach but the high zinc could be due to a dropped screw or other piece of metal maybe? I don’t know enough about zinc to say if that level is a problem or not.

Randy Holmes Farley dove deep into this and related trace metals here if you want a nice read:

I’m not saying I know it’s a problem. Just that it’s the only thing that jumped out at me in your ICP results.
 
Not sure if I can find if there is any screw in the back AIO chamber. That said , I do have media bags that have metal zipper(?) . I’ll replace all media bags just in case.

Edit ; zipper is plastic .
 
While figuring out what is the source of zinc, i ordered a small package 100g of Cuprisorb ( i read that i will remove copper + zinc) . Should be here tomorrow . I am trying to avoid drastic change as i'm heading out for a week.
 
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