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Old 05-31-2015, 01:26 PM   #1
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Redoing my 20 gallon

Well I'm at my wits end. I cannot beat this algae and I'm thinking my sandbed is the root of all evils. So I need a plan to take my rock out which has a bunch of acros and other sps attached to it and scrub off the gha and then pull my sand out. Ugh this sucks a lot lol.


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Old 05-31-2015, 01:42 PM   #2
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How have you tried to kill the algae?
Nothing has worked or helped?
Sorry if I'm late to the show.
What kind of sand?
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Old 05-31-2015, 01:54 PM   #3
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Hydrogen peroxide, vinegar dosing, water changes and pulling it out, running phosguard, over skimming, cut feeding back to 2-3 times a week. I've also cut my lights back to about 8 hours and it just keeps coming back...

The sandbed was reused from my old 10 gallon and is aragonite based and about 2.5 years old, maybe a little more.


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Old 05-31-2015, 02:26 PM   #4
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Phosguard sucks, and so does GFO, at removing large amounts of phospahtes, they can't do it quickly enough. They exhaust to quickly, and you must change like every other day.
Use SeaKlear phosphate remover, you can take out all phosphates in one day, you'll need to use a mechanical filter to take out the bound phosphates though. Once you've removed them, then you can use Phosguard or GFO.
Have you tried using a Sea Hare? Thats all they eat is algae, and would love to be in your tank.
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Old 05-31-2015, 02:53 PM   #5
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Redoing my 20 gallon

Don't suddenly crash your phosphate level, that can cause dramatic problems. Work it down with lots of water exchanges. Once it's under control use a bag of phosguard or GFO in a high flow area to keep it down. I dont think its the aragonite to blame.

Seaclear is lanthanum chloride, used primarily in swimming pools. It does bind phosphates, fast, but is controversial in its use as its powerful and throws off contaminates that must be removed immediately thru filtration. If your phosphate disappears over night, your hard corals will respond and some will respond badly. You want to do things gradually. JMO


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Old 05-31-2015, 02:57 PM   #6
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Don't suddenly crash your phosphate level, that can cause dramatic problems. Work it down with lots of water exchanges. Once it's under control use a bag of phosguard or GFO in a high flow area to keep it down. I dont think its the aragonite to blame.


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So you don't think it will just keep leaching phosphates into the system if I keep working the water changes?




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Old 05-31-2015, 03:02 PM   #7
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Redoing my 20 gallon

It will eventually stop. If phosphates aren't reintroduced by over feeding or using tap water, then the source of the phosphates is reduced to manageable levels. You might vacuum the sand with a siphon when doing water exchanges to flush out any trapped organic matter in the sand. Aragonite sand doesn't contain phosphate. It is basically calcium carbonate (ground limestone or coral).

http://en.m.wikipedia.org/wiki/Aragonite


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Old 05-31-2015, 03:05 PM   #8
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It will eventually stop. If phosphates aren't reintroduced by over feeding or using tap water, then the source of the phosphates is reduced to manageable levels. You might vacuum the sand with a siphon when doing water exchanges to flush out any trapped organic matter in the sand. Aragonite sand doesn't contain phosphate. It is basically calcium carbonate (ground limestone or coral).


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Yeah I know that. I guess I was thinking it had some trapped from when I reused it again.


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Old 05-31-2015, 03:08 PM   #9
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That's why a simple siphon with a soda bottle with no bottom can remove that debris before it breaks down further.
Eventually enough biology will develop in the substrate to help with the situation.

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Old 05-31-2015, 03:13 PM   #10
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That's why a simple siphon with a soda bottle with no bottom can remove that debris before it breaks down further.
Eventually enough biology will develop in the substrate to help with the situation.

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Ok cool. It's just sad because the corals are doing well and have good color but the algae is just ugh


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