Red Algae Outbreak

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Hi guys, I have recently started up my first two marine tanks. They have been goign for about 3 months. Both tanks are standard 4 foot setups. Everything has been okay until now... One of my tanks has got an outbreak with a red coloured algae which is starting to form a layer on top of my live rock and coral sand. What is the cause and the best way to get rid of this?
 
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Upping the flow in the tank can blow it off.

Did something die perhaps or did you change the top-up water?
There must be extra nutrients coming in to spark the growth...

My 2c ;)
 

viper357

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If it is a slimy algae then it sounds like it could be cyanobacteria (red slime algae). Do a search for cyano or cyanobacteria, there are many threads on the forum from people that have experienced this, it can be easy to get rid of most of the time but some people really battle with it.

How many pumps and what type do you have in the tank to assist with waterflow?

How often do you feed?
 

Mike

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It sounds like cyano bacteria, this is usually part of "new tank syndrome" do you test for phosphate? it is most likely this that is causing it, it usually burns out after a month or so, but to ensure you get rid as soon as possible, use only R/O water that has a tds of zero, test your R/O before you use it.
Where do you get your R/O from? what are your nitrates, how long is your lighting on for?

And finally, welcome to the forum.
 
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My lighting stays on for about 10 hours a day and I feed small quantities twice a day. i have two power heads in my tank (VIA-Aqua), an under-gravel filter with a JEBO hang on filter. I get my water from one of the local beaches. Those are the questions I can answer for now, will have to get readings this afternoon and update later.

What does R/O stand for?
 

jacquesb

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Hi Rockpool -

OK - here's my take on this:
- undergravel filters seems to be a "nitrate factory" creating more nitrates than what is needed/wanted
- feeding twice a day could possibly be your problem - cut this down to once a day, and you should notice improvement in a few days time
- how many litres of water do you have in total? Do you have a sump on any of the tanks?
- does the "Jebo hang-on filter" have a skimmer built-in? If not - perhaps you should think of investing in a skimmer at least....

R/O stand for "Reverse Osmosis" water.
 
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i have been wanting to invest in a protein skimmer for a while, they just so expensive at my local pet shops. Ordered one from Servistar, just waiting for that...

My tanks take about 200 litres each.

Will start feeding once a day and see if improves. Unfortunately have no sump for either tank, bought as is.. Will have to start upgrading.

Another question: Do tube worms prefer being in direct flow or in a more sheltered area of the tank?
 

Mike

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What powerheads do you have in them, this will help us to determine if you have sufficent flow, you should look at 25 - 30 times the volume of your tank.

Tube worms prefer moderate flow usually.
 

jacquesb

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Usually tube worms would prefer moderate flow. Not too much as that their "feathers" are blown to once side, BUT in enough flow that they can get food from the current.

How often do you do water changes, rockpool?
 

Mike

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try weekly 10% water changes, less change more often helps to settle the tank.
 
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what lph are your powerheads? if you up your flowrate, it usually helps. ps my new tank has a little red algae in the front where the flow is the weekest. i have focussed a powerhead on that area now,
 
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hey dude, can you send us a pic
if it looks like slime it s cyano, if it is looks like fine moss that one cant blow off then it's not cyano (something else that i had once)
 

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