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Old 04-18-2016, 07:21 PM   #1
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best way to raise calcium

When I first started my Red Sea Max C-130, I used Reef crystals. My calcium level was around 350 or so. Fine for my softies. Since then, I purchased a green birds nest and a duncan so I figured it might be wise to get the calcium level up a bit. I switched over to Red Sea Max Coral pro. It advertises calcium at 450 so I thought I would give it a try. Well, after a month of 20% water changes, my cal is still at 340 to 350. My question is: should I do one big ( say 50% or more ) water change to try and get the cal level up or use a calcium additive to get the cal where I want it then do my regular 20% weekly changes. Or...would a 50% WC even do anything to raise my cal. My parameters are:
temp-78F
Salinity-1.025
cal-340
alk-9.1
mag-1320
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Old 04-18-2016, 10:03 PM   #2
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More frequent water changes should do the ticket...with that said, what test kit are you using? They aren't all created equal.
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Old 04-18-2016, 11:18 PM   #3
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I'm using a red sea test kit and recently purchased a Hanna calcium checker. Did the test with both and the red sea was 345 and the Hanna was 351
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Old 04-20-2016, 04:26 PM   #4
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Id add calcium and see how it depleats in your tank. If you raise back up to 400, how long does it take to go down to 350? If its a few days your calcium is probably being used up some other way. A Duncan and a birds next should be stripping your tank quickly although it should be using calcium for sure.

SPS is usually when people have to dose because water changes aren't enough. If I were you I'd buy some calcium, get your levels up over a week or so and then watch what it does. If its stable then you may just have to supplement a bit with regular water changes, if it drops quick something else is going on. Usually that something else would be calcification in your tank due to low magnesium but you seem to have a fine level of mag. Do you get calcium build up on pumps or anywhere else in your tank?
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Old 04-20-2016, 04:41 PM   #5
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Hi there have you ever considered buying a calcium reactor which would help keep it at a level you require ,or even try changing your brand of salt which has a higher calcium level.


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Old 04-20-2016, 06:21 PM   #6
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Hello
Animal-chin. No calcium build up on any pumps or anywhere else. Hello Mr.tap water.
Red Sea Coral pro says it has 450ppm calcium @ 1.025 salinity which is what I'm running in my tank.
I tested my parameters last night and then did a 15% WC. My cal was at 355. I will test again this evening and see if the cal went up. If so, I will do a 15% or so WC every day until my cal is at 400 or so and then see how long it takes to go down. I do think dosing is in my future. As for a reactor, would that really be a good thing for my 34 gallon tank? Sounds like another expense...lol

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Old 04-20-2016, 07:55 PM   #7
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ya for 34 gallons I'd probably just buy some of the pre mixed cacium by red sea or some other company and add some here and there. You don't have the volume for a reactor.
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Old 04-21-2016, 07:15 AM   #8
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Hi there in that case I would just buy a concentrated calcium product like you was all already thinking of doing and dose daily which I believe you can rise your calcium in your tank a maximum of 20ppm a day until you reach the target you require it would certainly save you time and effort having to do continuous water changes to chase the calcium level you require, and once you've reached the level you want you just have to work out how much you're using daily which can be done by testing on a daily basis for a short time. Good luck.


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Old 04-21-2016, 10:01 PM   #9
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So...I did another WC Tuesday night and today dosed 10ml of reef foundation A. With the combination of both, my calcium tested 412 this evening. I have read that your magnesium level should be about 3 times more than your calcium. My mag level this evening was 1240 which would be correct...right? If I want my cal to be at 440 or so that means my mag should be around 1320. If magnesium is lower than that should I dose mag as well or wait to see if everything settles out. Don't want to go crazy on dosing if I don't have to..
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Old 04-22-2016, 03:22 AM   #10
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Hi there you're right in what you're saying about your mag being roughly 3 times the amount of your calcium so will have to top up with the mag, but also you should be trying to match the salt you use so look at the stats on the side of the bucket ,in my opinion it's much better to do it this way which helps keep things nice and stable when doing water changes.


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