Green algae

[Red Sea reefer]

Hello everybody so I was batteling algae for ezmore than a year
And I have green algae growing on the glass it's really hard to remove
And brown algae growing on the rock All my parameter are good po4 and no3 are zero I do 20% water change every ten day I run a GFO and change it every two week for lighting I use LEDs full spectrum . Below are some pic and I really need help with that

 

[njreefguy]

I don't see any pics. Likely the algae growth is masking the readings though.

 

[Red Sea reefer]

Something wronge I can't post any pic I don't know way

 

[chimmike]

water temp?
water source? RO/DI?

agree that the algae is masking the readings, or your test kit may be off.

 

[A1t2o]

The reason the phosphate and nitrate readings are near 0 is because the algae is absorbing it before you are able to read it. Do you have a sump or refugium? If so then you should add some macro algae and a light so you can control the algae growth. There will pretty much always be algae growth, the key is to control it.

Otherwise, How many fish do you have in what size tank? How much are you feeding them? Do you have a skimmer? When's the last time you have cleaned the power heads? Do you have adequate water movement? Are there dead spots in your tank? Do you have mechanical filtration and when was it last cleaned/replaced?

There are a ton of things that could go wrong to increase algae growth, the key is to stay on top of all of them.

 

[Red Sea reefer]

water temp?
water source? RO/DI?

agree that the algae is masking the readings, or your test kit may be off.

Temp is 81f , algae is mistaking the reading for sure , but I still do water change and run GFO test kit rea sea and Hanna

 

[Red Sea reefer]

The reason the phosphate and nitrate readings are near 0 is because the algae is absorbing it before you are able to read it. Do you have a sump or refugium? If so then you should add some macro algae and a light so you can control the algae growth. There will pretty much always be algae growth, the key is to control it.

Otherwise, How many fish do you have in what size tank? How much are you feeding them? Do you have a skimmer? When's the last time you have cleaned the power heads? Do you have adequate water movement? Are there dead spots in your tank? Do you have mechanical filtration and when was it last cleaned/replaced?

There are a ton of things that could go wrong to increase algae growth, the key is to stay on top of all of them.

Yes I have sump and Refugum I use the mirecal mud in it but I don't have micro algae it's hard to get them in my country the tank is 190 gallon the fish are not that much and not big yes I do have skimmer

The power head is I never clean it I do have I good water movement but I think there is a died spot behind the rock I will run another wave maker I run a GFO and carbon and just start running a biopellets

 

[cloak]

That hard green stuff on the glass is probably just a prelude to the purple Coralline algae we all love so bad. As far as the brown stuff goes it might be Diatoms, which could indicate an abundance of silicates in the water.

http://www.reefcleaners.org/nuisance-algae-id-guide

 

[Bogue Chitto]

You need to scrape the glass with razor blade or something, and then use a pad or cleaning magnet every week to keep the glass clean, if it is the front glass. If it is on the back I wouldn't worry about it unless it turned into hair algae.

 

[Red Sea reefer]

Those are the pics

 

[Red Sea reefer]

Here is the green one