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Old 12/19/2017, 03:49 PM   #1
Pslreefer
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Phosphates

How high is too high before it becomes detrimental to sps?


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Old 12/19/2017, 03:52 PM   #2
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If you are going for growth, anecdotal evidence is that it's much higher than if you are going for color. How high are your phospates?


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Old 12/19/2017, 04:02 PM   #3
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Phosphates

Not sure as Hanna ulr only goes up to .619

They were down around .4 until I used reef roids and it gumed up the filter on my return pump.

The tank is 5 months old as well. I donít like to use gfo, but looks like I may have to, in order to get them lower.


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Old 12/19/2017, 04:06 PM   #4
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Also have absolutely no algae in the dt either, my cuc and fish donít allow it to take hold luckily.




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Old 12/19/2017, 04:31 PM   #5
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The tank is 5 months old as well. I don’t like to use gfo, but looks like I may have to, in order to get them lower.
Or just stop overfeeding/reduce feedings..
Either that or your rock is leaching it.. Pukani?

But I wouldn't suggest anyone feed corals at all with such a new tank..
Most new tanks simply cannot handle the load..


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Old 12/19/2017, 04:50 PM   #6
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Phosphates

Ya, been feeding heavier due to a moorish Idol and newer powder brown, but they are eating heartily now and fattening up, so I can cut back.

Not sure on the rock itís a mix of brs dry rock from 2 years ago to rock I bought for my first tank in 2007 and a few pieces Iíve picked up along the way.

I did do a bleach bath on the rock when I set this tank up in July however.


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Old 12/19/2017, 04:59 PM   #7
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well.. sounds like you know what to do.


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Old 12/19/2017, 05:12 PM   #8
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I agree that some GFO might be a reasonable idea to try. That's a rather high phosphate level. We get conflicting reports on the effect of phosphate on stony corals, but I'd definitely work on lowering the level if I had stony corals in the system. If GFO gets pricey, there are ways to regenerate it, or switching to lanthanum chloride might be appropriate.


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Old 12/19/2017, 05:22 PM   #9
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Phosphates

That is certainly an issue as there is no concrete evidence of po4 levels on sps. Stability has proven to be more of a factor than anything. Obviously there has to be a cap at which too much is just too much.

But there is so much conflicting info out there itís difficult at times to determine whatís ďbest.Ē

I do however prefer natural methods over chemicals


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Old 12/19/2017, 05:58 PM   #10
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Carbon dosing might be able to reduce the level, as well, although some nitrate dosing might be required.


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Old 12/19/2017, 06:14 PM   #11
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Carbon dosing might be able to reduce the level, as well, although some nitrate dosing might be required.


I thought about that as my nitrates are very very low


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Old 12/20/2017, 05:42 AM   #12
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Phosphates

My 20 month old reef runs high phosphates, averaging .60 using Hanna 713 checker. My sps growth has been good (I think) but I assume my colors arenít as good as if I ran low phosphates. Here are pictures of 3 sps growth from 5/28/17, 11/5/17 and 12/12/17. Not sure if this is good growth or not since Iíve never had sps before.
B551CF32-334C-4BDF-A981-3450F4CE18C1.jpgORG_DSC01969.jpgIMG_5678.jpg


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Old 12/20/2017, 05:55 AM   #13
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Also have absolutely no algae in the dt either
Yet...


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Old 12/20/2017, 07:32 AM   #14
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If you just put 1.5-2 pounds of live rock per gallon in your tank you can never have too much phosphate no mater how much you feed.


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Old 12/20/2017, 07:58 AM   #15
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I have a lot of rock!







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Old 12/20/2017, 08:01 AM   #16
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Obviously you don't have enough live rock because with 1.5 to 2 lb of live rock per gallon you can feed all you want and you won't have problems with nitrates or phosphates


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"I hate that hole"

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Old 12/20/2017, 08:06 AM   #17
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It was all bleached so started as dry rock and dry sand as well. The only ďliveĒ anything I used was a couple cups of sand in the sump from the beach which I took from under the water not the actual dry sand.
It would most likely be just not established enough to handle the feeding load?


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Old 12/20/2017, 09:26 AM   #18
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Obviously you don't have enough live rock because with 1.5 to 2 lb of live rock per gallon you can feed all you want and you won't have problems with nitrates or phosphates
??????


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Old 12/20/2017, 09:54 AM   #19
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That looks like a new tank, i would run some GFO to keep it down until the live bacteria starts to grow. Average time for critical bacteria is 22 days. I would give it 60 days until its stable


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Old 12/20/2017, 09:55 AM   #20
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Also just an FYI, id keep an eye out for that right side of the tank. Direct sunlight is killer on new tanks. Perfect spot for algea to take over.


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Old 12/20/2017, 09:59 AM   #21
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Obviously you don't have enough live rock because with 1.5 to 2 lb of live rock per gallon you can feed all you want and you won't have problems with nitrates or phosphates

What?
Are you suggesting that live rock exports nutrients?


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Old 12/20/2017, 01:30 PM   #22
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Here is with lights on. Weird, but absolutely not s strand of algae. I went through 2 bouts of gha, at about the 1.5 month mark and 3 month mark. I ran gfo after the cycle and got all the gha out plus the idol loves eating the stuff!

Today light feeding of frozen for the smaller fish and s little piece of nori for the tang and idol. I have to keep nori in the tank as the pbt is not eating frozen or pelleted yet, and there isnít enough gha in my rock to sustain it either.





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Old 12/20/2017, 01:33 PM   #23
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What?
Are you suggesting that live rock exports nutrients?


Back in the day that is what was thought, so thatís partially where the 2lbs of rock per gallon came from.

It was thought that the bacteria and such in the rock would ďeatĒ po4 and nitrates I believe, hence the need for good established live rock.


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Old 12/20/2017, 03:18 PM   #24
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...It was thought that the bacteria and such in the rock would ďeatĒ po4 and nitrates I believe, hence the need for good established live rock.
Under certain conditions the organisms in and on mature live rock will process nitrate and phosphate. In a properly balanced mature system it will control nutrients.


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Old 12/20/2017, 05:12 PM   #25
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Live rock seems to support denitrification, which can export nitrogen without net consumption of phosphorus. It possibly can export phosphate as the skimmable byproducts of bacterial growth.


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