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Old 04-14-2009, 10:37 PM   #1
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help!! algea!! I think.

its been a week and all of a sudden my sand is overrun with diatoms and algea.
let me give all of my specs first.
amm - 0
nitrite - 0
nitrate - 5
ph - 8.2
phos - 0
temp - 79

these readings are from today and the last pwc was 1 1/2 wks ago.
I run 80W total of T5's from 2 pm to 10pm
and 2 250W mh from 3:30pm to 8 pm
I've had the diatoms before and they went away but this time there is a crap load of green also. I almost have no visible white sand left.

I have 2 fish and 4 corals and I feed every other sometimes every 3 days, I also run a reactor in the sump with phosban, only use RO/DI.

On a second thought, my Coral Banded Shrimp just died all of a sudden 3 days ago.
any thoughts would be great and is there anything else that I need to test for, just let me know.
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Old 04-14-2009, 11:08 PM   #2
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What is a good CUC to get for this problem?
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Old 04-14-2009, 11:16 PM   #3
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How old is the tank? It is not done cycling .What is is the size of this tank ?
This is part of the cycling . Since you have fish in there already siphon them off during water changes and keep up on them .. It is a nutrient issue .. They will eventually start to die off in a few weeks .... as everything starts to stabilize out ...For now just cut your lighting time out increase your water changes and monitor your parameters.. No clean up crews will touch this stuff normally .
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Old 04-14-2009, 11:33 PM   #4
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The tank is is about 2 1/2 mo. old.
set up 1-29
cyled ended 2-20
added 4 corals, 2 fish 2-22

all readings have been fine since. never had any spikes, and slowly brought my nitrates down through pwc.
all my readings are great, and i know im not over feeding.
I had a diatom breakout during the 3rd week of the cycle and it went away.

Why would it all of a sudden cycle again with no change in readings?
I do know that my coraline algea is really taken off, ive had to scrubb the glasss 3 times and 90% of the live rock was bleached white from the original cycle and now as you can see in the last pic that its going crazy.
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Old 04-15-2009, 08:38 AM   #5
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Quote:
Originally Posted by Gomer4378 View Post

Why would it all of a sudden cycle again with no change in readings?
I do know that my coraline algea is really taken off, ive had to scrub the glass 3 times and 90% of the live rock was bleached white from the original cycle and now as you can see in the last pic that its going crazy.
Chances are the 4 fish added are causing the spike . You did not give the bacteria time to catch up as you added fish.. When we add fish to a tank it causes it to "recycle" till the bacteria catches up ..
It is also normal to have them off and on for the 1st year whilst everything stabilizes out and balances . Also you say the rock "bleached out " which indicates to me that you had massive die off .. This can also cause a recycle as the stuff is pushed from the inside out of the rock into the water column..
As for the not changing get a silicate and phosphate kit to test as the diatoms feed off those . What size tank are we talking about here ?
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Old 04-15-2009, 08:57 AM   #6
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IMO

I doubt you are still cycling, or re-cycling for that matter. Are you using tap water, RO/DI? Is the tank getting any sunlight?

I agree on having the water tested for phosphates and silicates, also might want to have someone double check the A,N,N numbers too while your at it.

Do you have a skimmer? It's hard to tell from your 'my tanks' what equipment you have.

For now, siphon off what you can, lay off adding any new fish and maybe consider going black to get rid of what you have but you need to address the cause.

Adding 2 fish after your cycle isn't going to cause you to recycle. If that was the case we'd all be up ole what's his names creek .. all the time.
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Old 04-15-2009, 10:30 AM   #7
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looks like you could use a little more LR. When did you add the lights? Did you get the Coral banded shrimp out after it died?
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Old 04-15-2009, 12:33 PM   #8
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FantasyReef Databases-Viewing item "10 Step Plan for Nuisance Algae Control"
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Old 04-15-2009, 12:49 PM   #9
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I'm going to answer all the questions in short sentences since I'm on my phone.

Never tap water, only ro/di since day 1.

120 gal tank and 35 gal sump
200 lbs of LR.

Yes I have a skimmer and it works great, pulls about 1 cup of nasty crap out a day.

A,N,N tests are accurate, I have tripple checked.

Phosphate is 0, don't know about silicate(don't have test kit for it)

Yes I pulled CBShrimp out within 1 hr of dying.

T5's have been there since day 1, MH's have been here for about 1 mo.

I only added 2 fish on 2-22-09 (nemo, and yellow tang)

Everything has been perfect for 1 1/2 mo. and within this last week the diatoms went crazy.

No direct sunlight on tank.

The LR bleached during original cycle. My tank is young but established, I've got worms in my sand bed, copepods swimming about, my refuge has been doing great had to trim my cheato for the first time 2 wks ago.

I hope this answers everyones Q's
I know it's not a cycle, and readings are good, just can't figure out why the outbreak, or why the shrimp died all of a sudden.
Thanks everyone, keep the Q's comming and well figure this out.
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Old 04-15-2009, 04:18 PM   #10
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Are you sure of where the rock came from ? Get a copper test kit just to rule that out .. I say a cycle because every time you add anything to your tank you will have a minute cycle .. You will some times see the diatoms come and go for up to a year .. What kind of sand are you using as many have silicates that will release and leach into the H20 column
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