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chatyak
06/27/2008, 12:01 AM
Is it ok if your calcium level is a bit higher than 420ppm? Just reading this thread here (http://reefcentral.com/forums/showthread.php?s=&threadid=1287118) and noticed SeaChem has lvls in the 500s.

If I were to add this on a weekly waterchange basis.... the calcium would stay above 400 even with depletion no?

kau_cinta_ku
06/27/2008, 12:16 AM
my cal. stays above 500 using ocanic salt. never had any problems with it.

chatyak
06/27/2008, 10:50 AM
Does anyone have any experience with instant ocean? That is the first 2 buckets I ordered. If they are n't up to snuff I can always switch.

snorvich
06/27/2008, 12:02 PM
the only problem with elevated (greater than 400-420) is pumps need cleaning more frequently. Corals don't mind as long as alkalinity is in the proper range.

chatyak
06/27/2008, 12:12 PM
Thanks Snorvich. What about powerheads, more frequent cleanings I imagine as well?

chatyak
06/27/2008, 11:37 PM
bump

MPeer
06/27/2008, 11:57 PM
I read earlier from another post that once calcium levels get up into the 600 ppm range or higher (relative to alkalinity), it will start to precipitate out of the water and coat your pumps, skimmers' impellers, powerheads, etc...

Anyone who has better information, please correct me if I'm wrong.

Flipper62
06/28/2008, 12:12 AM
Instant Ocean is good if you have a fish only tank. If you have a reef tank you need to use Reef Crystals or something that has more of the calcium & things that a reef tank needs.

For a Reef tank....Target calcium levels are 420...450...460.

BurntOutReefer
06/28/2008, 01:06 AM
"For a Reef tank....Target calcium levels are 420...450...460.
"

depend what you are keeping

dreed
06/28/2008, 06:32 AM
I use Instant Ocean but I have only a few corals and fish now. I'm still building my stock up. My Mag stays at 1500-1600 and my calc is at 430-450 constant. I have a 65g with a 20g sump and I change 10g weekly. I'm sure I'll have to supp calc when I get it well established but I like the levels it maintains as I grow and learn more. Very consistant, easy to dissolve and use. I do have an algae problem though but i think it's my feeding habits. I spoil the inhabitants. I just have to clean more often until I slow it down to the proper level of feeding needed.

Dave

Gary Majchrzak
06/28/2008, 06:44 AM
<a href=showthread.php?s=&postid=12837932#post12837932 target=_blank>Originally posted</a> by Flipper62
Instant Ocean is good if you have a fish only tank. If you have a reef tank you need to use Reef Crystals or something that has more of the calcium & things that a reef tank needs.

For a Reef tank....Target calcium levels are 420...450...460.
I'm sorry but this is completely inaccurate information. I use Instant O in my personal reef aquarium (seen here).
http://reefcentral.com/gallery/data/524/7144IMG_2561_emperor_.jpg
IO one of the most (if not the most) consistent brands of saltmix according to many testing studies.
Calcium levels need to be balanced with alkalinity levels no matter what ppm you run it at. IME a Ca level between 400ppm and 450 ppm seems to work best. Higher levels of Ca can jam pumps.

<a href=showthread.php?s=&postid=12831321#post12831321 target=_blank>Originally posted</a> by chatyak
Is it ok if your calcium level is a bit higher than 420ppm? Just reading this thread here (http://reefcentral.com/forums/showthread.php?s=&threadid=1287118) and noticed SeaChem has lvls in the 500s.

If I were to add this on a weekly waterchange basis.... the calcium would stay above 400 even with depletion no?
it's OK to run Ca above 420 as long as your alk is correspondingly higher. (Remember the "see saw" effect of Ca and alk?)
Ca and alk levels drop as they're consumed by reef inhabitants, so if you rely on water changes (alone) to supplement these they will drop constantly until boosted by another water change. Fluctuating levels of Ca and alkalinity can be stressful to certain animals and this is why a dosing scheme to supplement Ca and alkalinity is often recommended. (See articles by Randy Holmes-Farley in the RC Reef Chemistry Forum).

snorvich
06/28/2008, 09:50 AM
I totally agree with Gary Majchrzak's well stated answer. In answer to a question posed above, yes, powerheads will require more frequent cleaning as your calcium exceeds about 420 (which is where I try to keep mine).

chatyak
06/28/2008, 03:19 PM
<a href=showthread.php?s=&postid=12838409#post12838409 target=_blank>Originally posted</a> by Gary Majchrzak
I'm sorry but this is completely inaccurate information. I use Instant O in my personal reef aquarium (seen here).
http://reefcentral.com/gallery/data/524/7144IMG_2561_emperor_.jpg
IO one of the most (if not the most) consistent brands of saltmix according to many testing studies.
Calcium levels need to be balanced with alkalinity levels no matter what ppm you run it at. IME a Ca level between 400ppm and 450 ppm seems to work best. Higher levels of Ca can jam pumps.


it's OK to run Ca above 420 as long as your alk is correspondingly higher. (Remember the "see saw" effect of Ca and alk?)
Ca and alk levels drop as they're consumed by reef inhabitants, so if you rely on water changes (alone) to supplement these they will drop constantly until boosted by another water change. Fluctuating levels of Ca and alkalinity can be stressful to certain animals and this is why a dosing scheme to supplement Ca and alkalinity is often recommended. (See articles by Randy Holmes-Farley in the RC Reef Chemistry Forum).

Using that chart in the link... which salts would be preferable then? I was going to try the SeaChem Reef mix after IO. However the Ca is higher than IO and their Alk is lower.

snorvich
06/28/2008, 04:29 PM
Personally I would go for a salt that has Magnesium at the proper level since you can't really maintain calcium if the magnesium is too low.

Paul_PSU
06/29/2008, 06:55 PM
If you have Calcium in the 500+ range then what would be the optimum alk? I currently keep mine at 8.

Gary Majchrzak
06/29/2008, 07:45 PM
use this online calculator to figure out how much to tweak your levels:

http://home.comcast.net/~jdieck1/chem_calc3.html