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  #1  
Old 06-25-2017, 03:33 PM
ajlessard ajlessard 目前離線
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Default Zeovit not as effective with new tank; trying to figure out why

I had a 240G tank for several years that ran really well on zeovit: zero nitrates and phosphates for almost a decade. I had to take the tank down and was out of the hobby for 5 years; started a 400G 18 months ago.

The tank is actually doing well; SPS heavy, about 30 fish ranging from tiny to vlamingi-tang-sized. I've run zeovit on it from day one, but chronically run nitrates at about 10-15 and phosphates at about 0.4-0.6.

Not terrible numbers, and the corals are doing well, but I'm wondering why I can't drive nitrates down to zero like with the last tank. I follow the procedure as I used to:

- 4L of zeolites, in 2 2L reactors, with the water volume turnover at about 200g/hour each (couldn't find a 4L reactor); shaken daily

- 4 cups of carbon in the sump

- 0.8ml of zeobak and 0.8ml of zeofood 3 times weekly

- 3.2ml of zeostart daily. I've had issues in the previous tank with using too much zeostart, so I run at about 0.8ml per 100G as I used to.


Any ideas as to why phosphates and nitrates hover at those levels? Been over a year, and it doesn't seem to be improving or getting worse...
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  #2  
Old 06-25-2017, 06:42 PM
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Is the return pump sized correctly to the tank. How much how goes threw the sump. is it same as the 240?
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  #3  
Old 06-25-2017, 08:05 PM
ajlessard ajlessard 目前離線
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Return pump is a Vectra L1, much bigger than the last tank, with a rated flow of 3100 gph.
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Old 06-25-2017, 08:25 PM
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How many fish are in the tank. Clearly zeovit can't handle the load. Maybe consider giving up some fish our increase your filtration; if you add a refugeium with strong lighting it would help.
Also if something died like a snail or something it can ruin a tank
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  #5  
Old 06-26-2017, 01:48 AM
All Delight All Delight 目前離線
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A snail dying could ruin a tank? Sheesh snails and hermits die all the time.
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  #6  
Old 06-26-2017, 02:20 AM
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G.Alexander G.Alexander 目前離線
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IMO the PO4 is the bigger problem, 0.6 mg is a lot especially for SPS corals.

Can you tell us something more about your system ?

http://www.zeovit.com/forums/showthread.php?t=14

Also which kind of rocks have you use ?

A full tank shot and a picture of your sump would also be great.

G.Alexander
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  #7  
Old 06-26-2017, 08:27 AM
ajlessard ajlessard 目前離線
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I used to believe in a zeroed out tank (zero nitrate and phosphate) and was pretty religious about in the last tank. In the years I was out the consensus seems to have shifted, with the idea that some nitrates and phosphates aren't necessarily bad, as long as algae isn't blooming. I went through the normal diatom bloom a year ago, and the tabknis pretty clean at this point. And I'm definitely getting coral growth; had to crank my DaStaCo from 1 to 4 over the last 6 months to keep alk up.

Pics of the tank are here:
http://m.imgur.com/a/A7zO1
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  #8  
Old 06-27-2017, 08:04 AM
Realworldreefing Realworldreefing 目前離線
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Are you running the Vectra L1 at 100%?? Your tank is beautiful by the way! Following along.
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  #9  
Old 06-27-2017, 08:15 AM
ajlessard ajlessard 目前離線
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Yes, Vectra is running full bore. Tank is pretty stable, just can't get nitrates and phosphates lower.

And thanks.
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  #10  
Old 07-07-2017, 09:20 AM
ajlessard ajlessard 目前離線
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Bump. Any other ideas?
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  #11  
Old 07-07-2017, 11:00 PM
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G.Alexander G.Alexander 目前離線
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It would be helpful if you answer Buggers question and post more details about your system like mention in my last post.

G.Alexander
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  #12  
Old 07-07-2017, 11:21 PM
ajlessard ajlessard 目前離線
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I have 7 larger fish (vlamingi tang, blue tang, etc.) and maybe 15 smaller fish (damsels, clown, etc.) in a 400G. Started with dry rock, but the tank is 18+ months old and certainly fully cycled by now. Not sure what you're looking for in the sump: it's basically bare except for the return pump and circulation through the chiller. Everything else (e.g. SRO Ext-6000 skimmer) is external. If you have specific questions, bring them on.

As for bugger's questions: he's questioning whether zeovit can "handle the load" with under 30 fish in a 400G, which implies he doesn't actually understand the system...
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  #13  
Old 07-08-2017, 01:40 PM
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Quote:
Originally Posted by ajlessard View Post
I have 7 larger fish (vlamingi tang, blue tang, etc.) and maybe 15 smaller fish (damsels, clown, etc.) in a 400G. Started with dry rock, but the tank is 18+ months old and certainly fully cycled by now. Not sure what you're looking for in the sump: it's basically bare except for the return pump and circulation through the chiller. Everything else (e.g. SRO Ext-6000 skimmer) is external. If you have specific questions, bring them on.

As for bugger's questions: he's questioning whether zeovit can "handle the load" with under 30 fish in a 400G, which implies he doesn't actually understand the system...
lol what a dont understand the system. I don't know what to say at this point you have to many fish so un-stock a little bit or get a nitrate filter and phosphate absorbers. keep in mind
The short, "Rule of Thumb" answer generally accepted in the marine aquarium hobby is: "One inch of fish (measured from the nose to the base of the tail) per 5 gallons of system saltwater." The normal response to this answer is: "Is that all? Why so few?"
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  #14  
Old 07-08-2017, 02:19 PM
ajlessard ajlessard 目前離線
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I've been at this for 20 years. The point to using zeovit is to be able to control nitrates and phosphates even in heavily stocked tanks. It's a 400G tank; even if I went by your neophyte rule that's 80 inches of fish, and I have about half that, so no, 7 larger tangs and a bunch of small fish is not "too much bioload", especially with zeovit. Your answer seems to be that zeovit won't work, so dump fish. It's ridiculous. I had more fish in my 240G and zeovit controlled it just fine

For anyone who actually understand the zeovit system, could splitting flow into two 2L reactors be affecting this? I didn't have to do that with the 240G tank, but couldn't find a 4L reactor for this one. The flow adds up to a tad under 400G/hour between the two reactors (about 200G/hour each). I could also up the dosage of zeostart, but had issues with thinning SPS tissues in the last tank when I ran zeostart at the recommended dose, so I'm at about 3/4 of recommended.
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  #15  
Old 07-08-2017, 02:30 PM
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Did you check the expire dates on the bottles.
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