blue-green algae outbreak + listing water params

[djlen]

If, after Richer's suggestion of the black out, the BGA comes back, it could be that there is a problem with these root tabs/granules working their way to the surface of the substrate.
The black out will kill what's there now.
Yes, Tom was referring to dosing after the black out is completed.
Do a large water change and clean up what you can. Raise spray bars and turn off CO2. Cover for 2 days. Uncover and do another large water change and re-cover. When black out is finished do another large water change and add back the ferts as described by Tom above.
If during these water changes you can do a complete(not necessarily deep) vac. job on as much of the substrate as possible, this would be a good idea.
Resist the urge to feed the fish during this process. They will be fine for the duration.

Len

 

[resk]

its difficult to tell about the root fert granules,

whether there are some sitting on the surface of the gravel..

my flourite is red / brown and the granules were also

i will be sure to do a good job with the gravel vac

 

[bortsamson]

maybe sound like an odd question, but I had a similar outbreak awhile back, looked to be blue-green, but not quite the same. I was able to remove it manually and such, just like yours, and it only happened to me after I changed my lighting setup to have my brighter light up at the front.
Now, I thought that if I stopped dosing ferts for awhile to let the plants soak up any excess nutrients, it actually got worse.
So I did a partial blackout, just had one row of light on for a couple days and went back to dosing my ferts, and also added some floating plants, duckweed I believe, and now I just have the "good" algae. Ya know, the kind that makes the tank look natural.
So, that worked for me, just keeping the lights low and upping the ferts to feed the plants. But also, some to think of it, I reduced my feedings as well.