Green film algae on rocks?

[zavosan]

Hey,

Here are pictures of some green algae all over my live rock. Aquarium is 5 months old, there are 5 fish and some frags of soft corals. everything is opened.
I have also a lot of snails, 3 hermit crabs... but that green thing nobody eats.
Nitrate is 0 (probably because green thing over rocks), phosphate 0.15-0.18 last month
What algae is that? What should I do? Dose nitrate? Add some GFO do reduce phosphate?

 

[rubertoe93]

Start with a nice water change, adding things to get rid of things can sometimes do more harm than good, I could be wrong but looks like diatoms? Reduced lighting and a good scrub see how that goes, if not add something to reduce phosphate

 

[AdamD76]

You still have a very young tank. This is normal for a lot of people. Cut back on how long your lights are on and how much your feeding.

Your pictures look mostly white, what lights do you have and how long are they on? Are they on full power?
How much do you feed and what do you feed?
RODI water?

I had the neon green rocks in the beginning also and it just went away on its own.

 

[zavosan]

Under blue lights you almost do not see that.
You see under 100% white(that is how was picture made) and if you take rock out of tank
I feed 2 times / day ... in the morning flakes or granules, in the evening frozen artemia (rinsed under rodi)
yes, I use rodi, TDS 0-3

here is thread about my light - I am not sure yet how to set it

Aqua medic spectrus 90

Hello, I have LED light made by Aqua Medic. I do not know how to set it. Tank is young (4 months) I have only soft corals at the moment Bestückung: LED Modul - Bestückung Total: 48 Stk A white 7000 - 8300 K 18 Stk B blue 465 - 485 nm 10 Stk. C royal blue 450 - 465 nm 8 Stk. D UV 405...

www.reef2reef.com

 

[zavosan]

I had diatoms but they went away without doing anything
Skimmate is also green and you can smell algae..
Scrubbing does not help... you can not remove that green with scrubbing

 

[rubertoe93]

I had diatoms but they went away without doing anything
Skimmate is also green and you can smell algae..
Scrubbing does not help... you can not remove that green with scrubbing

Did you say your whites run at 100%

 

[zavosan]

whites are at 15% . I gave them to 100% to make a picture

 

[AdamD76]

Under blue lights you almost do not see that.
You see under 100% white(that is how was picture made) and if you take rock out of tank
I feed 2 times / day ... in the morning flakes or granules, in the evening frozen artemia (rinsed under rodi)
yes, I use rodi, TDS 0-3

here is thread about my light - I am not sure yet how to set it

Aqua medic spectrus 90

Hello, I have LED light made by Aqua Medic. I do not know how to set it. Tank is young (4 months) I have only soft corals at the moment Bestückung: LED Modul - Bestückung Total: 48 Stk A white 7000 - 8300 K 18 Stk B blue 465 - 485 nm 10 Stk. C royal blue 450 - 465 nm 8 Stk. D UV 405...

www.reef2reef.com

I would feed once a day no flakes.
What granules are you using?
My rocks were the same, almost like a green coraline algae and couldn't scrub it off.
Just turn the lights down low and cut down your feeding. It will eventually be replaced with purple coraline.

 

[Subsea]

There are different colors of coraline algae and green is one of those colors.

Reduce phosphate with GFO and increase nitrate

ESV B-Ionic Nitrate

Provide your reef with nitrogen essential to great growth and color, with no unwanted by-products. B-Ionic was introduced to address the low nitrate conditions found in many modern reef aquaria, in a formulation that would avoid some of the side-effects of other similar supplements, such as...

www.bulkreefsupply.com

 

[zavosan]

I am using Tropical 3-algae granulat and Tropical D-Allio Plus Granulat.

I will first start using GFO and then see the result

skimmate is also very green and you can smell algae...

 

[AdamD76]

I am using Tropical 3-algae granulat and Tropical D-Allio Plus Granulat.

I will first start using GFO and then see the result

skimmate is also very green and you can smell algae...

My skim smell like sewer gas.

 

[Subsea]

Hey,

I am using Tropical 3-algae granulat and Tropical D-Allio Plus Granulat.

I will first start using GFO and then see the result

skimmate is also very green and you can smell algae...

Please take a full tank shot with white lights, so I better understand your system. I am particularly interested in your sandbed as an indicator of sandbed maintenance or nutrient sink. I also suggest you start a tank thread on that forum. It would be a journal for you and a point of contact for others to know about your system in order to best assist you.

Your parameter of zero nitrate should not be ignored. Many nuisance algae thrive when system nitrates are limited. At the bare minimum, verify the accuracy of the test. If zero nitrate is accurate, I suggest dosing a source of nitrogen.

 

[zavosan]

Here is full tank with white lights...
What do you think about my LED settings?
What sorurce of nitrogen do you reccomend? KNO3?

There is only so much sand that it is not bare bottom. I vacuum it once every 2 weeks

 

[Paul B]

Don't do anything. It is normal and looks good. When people add or change things to alleviate some normal occurrence, thats exactly when problems start.

Leave it along and go out to dinner but stay 6' apart.

 

[Subsea]

Here is full tank with white lights...
What do you think about my LED settings?
What sorurce of nitrogen do you reccomend? KNO3?

There is only so much sand that it is not bare bottom. I vacuum it once every 2 weeks

Your tank looks great and I like your aquascape.

I would not reduce feeding or light. Yes to KNO3. I use ammonia because I have several large systems.

Can’t help you with light settings. I run my system at 10K. This is what 10K looks like.

 

[paintman]

What PaulB said! Perfectly normal for a tank that is young.

 

[Dan_P]

Here is full tank with white lights...
What do you think about my LED settings?
What sorurce of nitrogen do you reccomend? KNO3?

There is only so much sand that it is not bare bottom. I vacuum it once every 2 weeks

Nice tank. You are keeping it neat looking. Nothing seems wrong.

 

[Boosterman]

@zavosan How did this algae do? Did it go away? My tank is 3 month old and I have this same algae in my tank.

 

[zavosan]

I bought those rocks from some old tank(my mistake, you want to go cheap but that is the expensiest in the end)... i have seen that rocks in other tanks were much different
then I decided to change all live rock slowly, so now I do not have any of those rocks anymore

and I see that now tank works much better... i see some growth now.

 

[zavosan]

I started with 1 rock, than another and in the end everything - here is final product