This was it a half a year ago, with waterparameters incuded:
So you can conclude this:
- Plants where starving on lack of NO3.
- CO2 was not enough.
- Algea takes over, because the plants has no nutrients.
- I was feeding with phosfate rich food (Arthemia, Daphnia). This caused blue algea, especially because their was no Nitrates.
I'm very very thankfull to all the people that advised me. Without them i never got these conclutions/photo's/glad me
This is what i changed:
- fed back the BGA to the filter. Because it is dark there it will decompose and give away it's bounded Nitrogen to the water.
- I've bought the Dupla Co2 set.
- Added some KNO3 to get proper NO3 levels.
- Because there is always a lack of Potassium in the watersystem, the K boosts the plants really good.
This was so successfull, the algea dissapear within in week! (i have to tell it over again because i can't believe it myself :? ) Maybe the aging of the lights have taken part in this story too.