For the first time in my 13 years with starting small aquariums have I run into some smaller problems with Cyanobacteria in the sand. As you can see in my video above - the sand is rather brown but not a sign of red Cyanobacteria. A week later (around Sept 20) I notice red Cyanobacteria in the sand. As usually - I add some NO
3 to the water and did a water test of NO
3 and PO
4 a week later. It show up that I had low PO
4 as well. I add some PO
4 too. During this time (since I notice the red plague) I stir the sand at least once a day too.
There is two things that I have done different this time - I have used a much more effective light and no WC during this first three months. The AI Prime is very effective and I have run it for 14 hours and for 100% during at least 4 hours a day.
Four days ago I change the light to be active during only 8 hours and highest intensity for 3 hours. I also activated a long (30 days) acclimation period with start at 70% reduction of the white and 50 % for the others.
Things looks a little bit better now but I going to do a 20 % WC (using water from my other tank) this evening. Things looks much better now.
And I have got another fish too -
Bathygobius meggitti
Sincerely Lasse