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Old 12-06-2010, 02:20 AM   #1
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live rock is always clean and almost white looking

Hi,

We have a marine tank that we have had for approx. 2 years now and from a lot of trial and error we are starting to make progress. However, when i look at pics of other tanks, their live rock is always clean and almost white looking, whereas we seem to have a constant algae prolem, its green and ruins the entire look of the tank. Any advise would e soooo appreciated.

Thanks,

Jess
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Old 12-06-2010, 03:07 AM   #2
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First off welcome!!!! This is a great site
Well I'd ask how many times are you doing PWCs (partial water changes ) that makes a huge difference another thing what type of lights, what's in the tank and what type of filtration are you using ?
These are some questions that will help if not me someone here give you a better answer
Posting pics don't hurt either
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Old 12-06-2010, 03:53 AM   #3
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It could be a lot of different things.
What are your readings for:
Nitrate?
Phoshpate?
What are you using for top off water and water change water?
How old are your lights?
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Old 12-06-2010, 04:12 AM   #4
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Wow, thank you for the welcomes and the quick responses!
Ok, well water changes we try and do every 3 weeks however with the cost of salt, i have to admit we can be slack on that. In our sump tank we have bioballs, active carbon, ceramic rings, cupusorb and biochemsorb. We try to keep the tank at a constant 25deg celcius with uses of heaters and and external chiller for summer. We only have to 2 lights (a powerglo and a marineglo tube) I believe that the cupusorb and biochemsorb are supposed to take care of the nitrates and phosphates, however we are novices and there is next to no local knowledge available.

We have a few fish (2 clowns, keyhole angel, blenny, 5 chromis, puffer, cardinal and a slug) and have not long started to try some soft corals. The clown live in a BTA (which has since split into 2)

Ummmm, i think that is all i have to offer besides the [moderator edit] algae that is spoiling the whole thing.

Thanks

Jess
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Old 12-06-2010, 04:17 AM   #5
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Are those lights Power Compacts,halides or T5HO or....
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Old 12-06-2010, 05:46 AM   #6
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T5's
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Old 12-07-2010, 03:13 AM   #7
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You really need to at minimum test your Nitrates. With the bioballs and ceramic rings I am betting it is high. Read up on removing the bioball and ceramic rings slowly and replacing them with live rock rubble if possible... and if they are submerged.
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Old 12-07-2010, 08:36 AM   #8
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you don't have enough light to support many corals, if any at all. are the anemones holding color?
you need to at least double the amount of light you have over the tank now.

you have a cannister filter on the tank also, correct? i would clean this out weekly.
as ryshark stated, start removing those bio balls, or at least take some out and shake them off in salt water to remove any detritus.

i'm afraid water changes are vital to keeping your inhabitants happy, and your tank looking good. this is not a cheap hobby.

what kind of slug is in the tank? most of them have enough toxins inside of them that if they die, can nuke the tank and kill the rest of the inhabitants.
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Old 12-07-2010, 09:34 AM   #9
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All good advice above. The BTA probably split due to lack of light. If you don't increase it per mr X's suggestion you will most likely lose both of them.

You MUST start testing for pH, ammonia, nitrites and nitrates at a minimum. Adding tests for calcium, alkalinity, magnesium and phosphates are also a good idea if you plan on adding corals.

Please test the water parameters and let us know the readings you get for:
pH, ammonia, nitrites and nitrates. Alk, Calcium and Magnesium reading would also be helpful.

Regular partial waters changed of 10% per week or 20% every other week are essential to maintain a healthy tank.

Also, what do you feed the tank and how often?
If you are having algae problems it is because of excess nutrients in the tank. Cut back the feeding to just once every other day.
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Old 12-08-2010, 01:15 AM   #10
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ok, thanks to everyone who has offered help. I will get onto the testing and let you all know how it goes... While i do this, i have a question for you all... how many light hours a day do you recommend?

will keep you posted
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