Black/brown Algae Wont Dissapear!

[s007]

Ive tried everything now, added extra movement to the water by using x2 300lph powerheads tried adding more ferts and co2 tho both of my checkdropers on both sides of the tank show lite green meaning just right.

Those busshy brown algae just grow like mad!

tank size: 260 Liters, 2.1 WPG light on for 8.5 hours a day after that blue LED moonlight till 11pm.

Any other advice as nothing seem to work on them

 

[aaronnorth]

is this the tank with the FX5 on?

how is the CO2 diffused?

 

[s007]

nop its with Fluval 305 similar tank to the one with fx5 filter. The co2 is difused fia galss diffuser with ceramic disck on top and then sucked on to powerhead breaking co2 bubbles even more and distributing all over the tank.

 

[aaronnorth]

can you get a pic of the tank?

Thanks

 

[s007]

its the one in my signature

 

[aaronnorth]

ok,
why are you runing an airstone with pressurized CO2?

 

[s007]

ok,
why are you runing an airstone with pressurized CO2?

Huh??? im not (dont know where this came from) its runing from glass diffuser.

 

[aaronnorth]

You said the tank in question is in your signature, and that tank is clearly running an airstone!

 

[s007]

Oh yeah it was probably taken just befor the lights went off... my co2 switches off 1 hour before lights go off and my airstone goes on throught the night and switches on 10 minutes before lights go off. and then switches off again on the morning just before co2 goes on 2 hours prior to lights going on

lol hope that makes cence

 

[aaronnorth]

It is a bit puzzling this one, flow is a bit on the low side, but the tank doesnt look heavily planted so i am sure circulation will be fine to all areas. CO2 seems fine aswell.
The only other cause is ammonia, when did the BBA start/ how long have you had it?

To get rid i would buy some easycarbo or AE aquacarbon and dose 3x the reccomendation. If it is only in a few places, then try spot dosing (squirting the daily amount onto the patch) this is more affective unless the whole tnka is covered.

What fertiliser are you using and how often do you dose?