Loosing My Mind With This Tanks ALK/CA...... NEED HELP

GlassMunky

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I dont know what to do.....
I'm loosing my mind trying to understand my tanks levels and get it back to normal.

A few weeks ago, maybe like a month, my tank had a pretty nasty crash. I'm not sure what exactly crashed the tank though. i had thought that i had gotten my new calcium reactor finally tuned in as i had kept the levels in the tank constant at 10.5dkh and 450ppm CA for a little over 2 weeks. but i noticed one of my acros was starting to STN from the base, so i did a small water change (hadnt done one the entire time of tuning in the reactor), and then when i came home from work, the tank was nuked...... almost all my SPS died and all of my LPS was looking ****** off .NO IDEA what it was.
So i ripped out all the coral that had not died that i cared about and relocated them to a friends tank for safe keeping.
I then did a few massive water changes over the course of the next couple weeks, and also added a bottle of live bacteria to try and help boost the bio-filter in the tank in case that was an issue.

In anticipation of trying to get some SPS back into the tank, i wanted to try and get the tanks alk/ca stable before i start re-adding all the coral. So on Tuesday evening (10/01/2104) i tested my ALK (8.0dkh) and turned back on the calcium reactor. the next evening i tested the tank again, and my alk had raised by half a point to 8.5dkh. the next evening it was up to 9.0 dkh. Ok, so at this point im thinking to myself, "ok, the setting of the reactor is raising the tanks levels slightly each day since i no longer have any SPS eating it up" so i decide i want to let it continue to raise until 9.5 where i would like to ideally keep the tank at. but on friday, saturday and today the tanks alk has stayed right at 9.0 maybe 9.1

I'm confused as to why it would raise the tanks alk in a steady pattern and then suddenly stop???? Is this something i need to be concerned about?

also, concerning Calcium levels, originally when i first setup the reactor i tested calcium with the alk daily in getting it tuned and they both stayed in the same pattern. if alk raised so did calcium. if alk dropped so did calcium. since this tuesday when i turned the reactor back on, ive only been testing Alk, until today, where it tested at 500 (or above since the test kit stops there).
I know that at an alk level of 9.1, having my calcium up that high would be considered out of balance.
Is this maybe from my reactor putting out more calcium then alkalinity? what would cause that if so and how do i correct it? Or is it something else entirely? Should i try to get the calcium down, or the alk up a little more to get them back in line with each other?

I'm sooo lost and have no real idea as what my next step should be.
sad.png

I just really want to get my nice tank back.


System is a 90G display tank, 40G fuge full of caulerpa, 30G sump, Radion Lights, Vortech Pumps, BM Curve-7 skimmer, MRC CR-1 Calcium reactor controlled by apex with CA-reactor pH held between 7.2-7.25
 
GlassMunky;2028729[COLOR=#282828 said:
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Is this maybe from my reactor putting out more calcium then alkalinity?

No, that isn't possible.

Is the reactor on a pH controller? Have you calibrated it lately?

The water change was with what mix and how much?

The water change is the cause of the calcium boost, unless it is a testing error.

As the alkalinity rises, the demand rises, so at some dosing point of any supplement, the alk will stop rising.

If there is a lot less SPS in the tank, I might turn the CO2 to the reactor way down or even off.
 
Yes, the reactor is controlled by my apex and a brand new and freshly calibrated lab grade probe. And keeps the ph at 7.2 .

All my water is RO/DI using Kent salt.

I believe you are misunderstanding though. The water change before the crash was like a month ago. After that happened, i turned off the reactor until this past tuesday and only did water changes. I havnt done a water change since turning it back on.

Theres literally no SPS in the tank now, only lps. A bunch of euphyllia and some favids.
 
I just want to get everything back to steady before adding all my corals back in. I dont want to add a bunch of colonies and frags and have them die q few days later because tge tank isnt ready for them.


Or am i looking at this completely wrong???

Should i just not do anything untill i add the sps back?
 
There is nothing besides a water change or a calcium additive addition that can boost calcium and not alkalinity by a large amount in a short period of time. If the water change was enough previous that it didn't cause the calcium rise, then it is testing error, either the earlier measurements, or the current ones. It cannot ever rise on its own. :)

Kent salt does have a lot of extra calcium, at least the last time I saw.

Have you measured ammonia?

That is the one I'd be most worried about after a crash.
 
Ammonia and nitraites/nitrates are all zero.
Currently the lps are all back to normal, and the fish are good.


I guess at this point, im just curious what my next move should be.
The LPS seem fine, but ive put in a "tester" acro and it looks like **** after being in the tank for a week.


Should i leave the reactor on? Or turn it off? If i turn it off should i dose anything manually?
Should i try and get the alk back in ratio with the calcium or just ignore it?


I almost tore down the whole system after the crash, and its still an option if i cant get the tank to keep an acro alive...

Im lost
 
Are there any inverts in the tank, like shrimp or snails or crabs?

Just trying to see if the issue might be copper.

Having the reactor on a low setting might be OK as long as the alk does not rise again. You'll have to keep an eye on it.
 
Yea, i have a coral banded shrimp , sea star and a cleaner shrimp as well as a whole clean up crew.

If i keep the reactor on a low setting, is it ok that the calcium is up at 500 with the alk at 9?
 
Yea, i have a coral banded shrimp , sea star and a cleaner shrimp as well as a whole clean up crew.

If i keep the reactor on a low setting, is it ok that the calcium is up at 500 with the alk at 9?

Yes, those values are fine. :)
 
Ok, i guess ill just keep monitoring it and see what happens over the next week
 
So why is it that you are shooting for a PH of 7.2. Should be in the 8.1to 8.3 range. Surprised randy didn't question you on that. Hopefully you just miss typed. Would be fine for freshwater tank but not reef.
 
So why is it that you are shooting for a PH of 7.2. Should be in the 8.1to 8.3 range. Surprised randy didn't question you on that. Hopefully you just miss typed. Would be fine for freshwater tank but not reef.

7.2 is the ph in his reactor not the DT.

Question for glass monkey....what was your alk level when your tank crashed?
 
7.2 is the ph in his reactor not the DT.

Question for glass monkey....what was your alk level when your tank crashed?

Correct. Reactors ph is 7.2. The display tank hovers right around 7.9-8.0

The tank crashed with an alk of 10.5
 
Shouldn't the Ca reactor pH be more like 6.4? Are you getting dissolution at 7.2?
 
Shouldn't the Ca reactor pH be more like 6.4? Are you getting dissolution at 7.2?

media begins to dissolve with ph in the 7's and starts to turn to mush when below 6.5. I currently run my reactor at 7 ph and based on my alk demands my all level is rock solid at 8.28 on lamotte test kits.
 

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