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Old 05/20/2018, 09:56 AM   #426
Dan_P
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The chart was introduced about 9 years ago when carbon dosing began to be more popular....
Thanks. This was a nice recap. The 2 mL/gal cap is an interesting observstion. Not sure anyone would a priori have predicted this limit. There is still a lot to discover here, one thing being the non-reproducibility of successful dosing.


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Old 05/20/2018, 03:53 PM   #427
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I wanted to know what others were experiencing ,so I...
If you'd like to post your observations in the vodka dosing table thread, I think other people would be interested, and it'd be easier to find them.


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Old 05/20/2018, 09:54 PM   #428
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People have made that hypothesis, but I haven't seen any reason to see how that can work. The soft tissue creates the skeleton, so it has to be there for the coral to grow.
I don't think it's a simple as a lack of tissue growth. I think the shortage of nutrients in a so called UNLS system makes it harder for the coral to direct skeletal growth for which they use ATP phosphate to mediate the caclio blastic fluid among other things. A nitrogen shortfall may also have an impact on zooxanthelae. With some PO4 and nitrogen , say PO4 at .02 to .of ppm and nitrate at.5 to 1ppm and alk in the 9 to 10dkh range there is no burnt tip syndrome in my tanks.


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Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.
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Old 05/22/2018, 11:40 AM   #429
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If you'd like to post your observations in the vodka dosing table thread, I think other people would be interested, and it'd be easier to find them.
Done as requested . Feel free to edit for clarity if you wish.


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Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.
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Old 05/22/2018, 10:37 PM   #430
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Thank you!


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Old 05/23/2018, 11:02 AM   #431
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You are welcome; my pleasure.


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Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.
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Old 08/04/2018, 06:17 PM   #432
rsucre
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Your vinegar dosing is approx. equal to what I am currently dosing. I have dosed more, a lot more, and pulled back because I was getting a lot of bacteria. My nitrates and phosphates are approx. 0. Daily I feed:
1/2 cube Marine Delight
1/4 tsp of Coral Frenzy
1/4 tsp. TDO
5ml RG Complete Phyto
3ml each Red Sea A&B
Every other day I tweezer feed 1/4 of a prawn tail to my lg. brittles and huge arrow crab
Cheers! Mark
Hi. What size/volume tank is this?


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Old 08/04/2018, 08:08 PM   #433
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Hi. What size/volume tank is this?
Wow, this is testing my memory. This was my feeding routine in January and we had approx. 120 gallons. Now we are up to 180 gallons. I have revamped my feeding and vinegar due to the fact that natural seawater we were using spiked our nitrates to over .45ppm.
Cheers! Mark


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Old 09/14/2018, 09:46 AM   #434
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Not being able to use natural seawater (red tide south west Fla) has caused my problems.

My tap water is 9.5 PH so adding my kalkwasser to my top off created a total ph of 12.0 in my top off tank... My display tank ph crept up to 8.9 during the middle of the day so I started dosing 8 - 12 ml of vinegar daily (65 gal tank) to get the ph down. So far so good and I have not done any water changes in 3 to 4 months. I don't plan to increase the vinegar dosage.

I did finally buy some reef crystals so I'll do a 5 gal change this weekend until I get back to 15 gallon changes.


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Old 09/14/2018, 11:08 AM   #435
rsucre
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Not being able to use natural seawater (red tide south west Fla) has caused my problems.

My tap water is 9.5 PH so adding my kalkwasser to my top off created a total ph of 12.0 in my top off tank... My display tank ph crept up to 8.9 during the middle of the day so I started dosing 8 - 12 ml of vinegar daily (65 gal tank) to get the ph down. So far so good and I have not done any water changes in 3 to 4 months. I don't plan to increase the vinegar dosage.

I did finally buy some reef crystals so I'll do a 5 gal change this weekend until I get back to 15 gallon changes.

I think you are referring to KH, not PH.


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Old 09/14/2018, 01:55 PM   #436
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A full-strength Kalk solution should be at about pH 12.5 or so. Tap water can come at a high pH to reduce corrosion, so those numbers seem plausible for pH.


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Old 09/14/2018, 01:58 PM   #437
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I thought he was referring to the pH of the display tank. Sorry about the confusion.


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Old 05/18/2019, 08:50 AM   #438
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A few days ago I discovered that my Ca was at 240!!! I validated the result by taking a water sample to my LFS and also by testing my other tank and it is confirmed that my Ca was super low.

My fault to stop doing periodic Ca tests because I felt that it was pretty stable with my Kalk dosing (ATO reservoir), so I decided to test only Alk, Nitrate, Phosphate, Salinity, Mg and sometimes K. Bad decision!

I'm now slowly correcting it by manually dosing Red Sea Calcium+ stock solution (1ml raises 2ppm Ca in 25g). Ca is now at 340ppm.

Now the question: Why? I'm maintaining my Alk at around 7.8 - 8.1 dKH with Kalk (via ATO RO water). My understanding is that normally, with this mechanism of Kalk, Ca and KH should remain leveled. If I'm monitoring my KH closely, how come Ca went so low and in a different direction? I understand that it would be more common for Ca to go up and not KH with Kalk.

Perhaps the Vinegar dosing plays a factor here? Can you help me understand what's doing on? Will I have to adjust something? Or will I just have to start dosing Ca separately of the Kalk to compensate for the Ca-KH disparity?


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Old 05/18/2019, 05:27 PM   #439
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Vinegar dosing probably won't make a difference. How long ago was the last calcium test before you got the 240 ppm measurement? Water changes will lower alkalinity a bit if there's nitrate in the water column, and that could lead to this problem over a very long time frame.

You might have gotten a bad batch of salt, or there might be some other similar issue. Another possibility is dosing alkalinity supplement thinking it's calcium, which has happened at least once before.


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Old 05/18/2019, 08:05 PM   #440
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Hi Jonathan,

> 6 months since my last Ca test. Ca was always around 400ppm.Embarrasing to say, but yes, I should not have stopped testing Ca.

My NO3 is almost undetectable to the point I started to dose NO3 (Sodium Nitrate solution) daily. Even with dosing, NO3 has not been greater than 0.5ppm. I also dose Kalk in my topoff water. KH has been tested weekly and been between 7.8 - 8.1 dKH.

Almost no water changes in the last 6 months.


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Old 05/18/2019, 11:17 PM   #441
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I am not sure what happened, then. I don't think that kind of drop would be expected for such a setup, although 6 months is a long time. Every month or two should be okay for most systems.


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Old 05/18/2019, 11:19 PM   #442
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Thanks Jonathan. I will correct the parameters and keep an eye con it.


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Old 05/19/2019, 04:23 PM   #443
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Okay. Please let us know if you find any interesting trends.


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