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Old 08-12-2006, 10:22 PM   #1
lchau211
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How to reduce phosphate?


Just tested this morning. Phosphate is 2 mg/l. Thanks.
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Old 08-12-2006, 10:25 PM   #2
three90s&125sump
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that is bad. There are some resins out there but Ihave no first hand experience with any of them. The problem is that if you are reading phosphates in your water colum it may be time to cook your rock and replace your sand.

How old is the system?
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Old 08-12-2006, 10:27 PM   #3
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What is your source water? RO? Check the TDS?

That's awfully high to be coming all from in-tank.
Resins aren't going to solve the problem. With levels like that, you need to find the source(s) and cut them off.
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Old 08-12-2006, 10:51 PM   #4
lchau211
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Tank is 5 month old. I use DI. Going to check TDS.
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Old 08-12-2006, 10:51 PM   #5
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faulty test kit?
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Old 08-13-2006, 09:23 AM   #6
lchau211
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Quote:
Originally Posted by three90s&125sump
faulty test kit?
Tested on source DI water. Phosphate is undectable.

Both display tank and QT tank have high Phosphate reading. QT is barebottom with no LR. I think the food may be the problem. Have you seen such high Phosphate reading from food?

I feed: Ocean Nutrition Prime Reef flake, Ocean Nutrition Formula One Marine Pellet, Ocean Nutrition frozen mysis shrimp, San Fransciso Bay frozen brine shrmip, Nori. Feed 1-2 times a day with very moderate amount of dry food or 1 frozen cube (split between main tank and QT tank); fish can consume all in less than a minute.

Main tank: 4" saifin tang, 3" hippo, 3" lemonpeel, 1.5" firefish.
QT tank: 2x 1" percula clown, 2" flame angel.
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Old 08-13-2006, 09:40 AM   #7
dirk griffin
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Cut back on your feeding and start dripping kalkwasser. Probably double check your readings with another test kit.
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Old 08-13-2006, 10:03 AM   #8
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Just curious, how does kalkwasser help with high phosphates??
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Old 08-13-2006, 10:21 AM   #9
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Wow !feed every day! there's some of your problem.How about do you have a skimmer and if yes what kind?
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Old 08-13-2006, 10:44 AM   #10
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Uneaten food is the #1 source of phosphate. Die-off is #2 - so long as it's not coming from your water. Anything organic that decays in your tank releases phosphate.

Kalk can help, but not with levels like this, and probably not much overall. At the high pH of kalkwasser (14-ish), kalk can react with free phosphate to form insoluble calcium phosphate. It probably only happens right at the point where the kalk drips into the tank, though, since the pH quickly drops as the kalk disperses. Not a practical soution at all. More of a nice byproduct of dripping kalk than a useful tool.
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Old 08-13-2006, 10:46 AM   #11
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TrimixDiver Kalk, due to it's high pH will cause precipitation of phosphates as calcium phosphate. Ichau211, Loverotties has a good point, what's your water volume and skimmer? Reduce feeding and do some water changes, drip kalk. I've used both the seachem product and the two little fishies phosphate removers. They work, but some corals may have a bad reaction to it.
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Old 08-13-2006, 11:11 AM   #12
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I would suggest going about a day with out feeding the systems and retest. You may have just tested when the food was still particulated in the water and got some in the vile.

Another thing is carbon.. are you running carbon and if so place a few peices in some DI water and let it set for a while and test it and see what you.
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Old 08-13-2006, 11:27 AM   #13
lchau211
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Not running carbon for 3 weeks. Skimmer is Turboflotor T1000 classic. Tank is 125 gallon. Going to do a 25% water change.

How often do you feed? Is feeing once a day too much?

Thanks for all the help.
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Old 08-13-2006, 11:56 AM   #14
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Phosphate elimination


salifert phosphate eliminator works well but you will need to have a skimmer to make use of it. also testing will not work with this product and only watching the bubbles indicates that phosphate was or is being remove from your aquarium
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Old 08-13-2006, 11:57 AM   #15
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I feed 3x a day....I just dont do water tests .
good skimmer, lots of snails and crabs and starfish, just like the ocean.
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