Jen
Fish Gatherer
My boyfriend is having problems with his tank, and we are both stumped. He came home from a week away to find some white 'algae' on parts of the gravel, some of the rocks and on the glass itself. He scrubbed it off and did a water change, only to find it back again. If he isn't able to clean it up right away (off to work or whatever) when he comes home and gets to the tank, the 'algae' has moved, of sorts. The spot from the morning is gone, and there is a new spot somewhere else. It is easy to remove and breaks up easily.
He only has a nitrate test kit, and that is reading 10ppm.
Tank is 38gals, has a single fluorescent bulb on from 8am to 9pm - 50/50 reef. Has a few plants in there, and doses general plant ferts. There are 11 danios, 1 red tail shark and 3 cats. The danios and plants are 3 weeks old, sharks went in 2 weeks go and the cats last week.
The only thing we can brainstorm is that while he was gone someone else was looking after it and may have been over feeding.
The first picture was taken today at 4pm, and the others at 9pm - just 5 hours difference. It's the same rock. Nothing has changed in the tank between the two times... water change was done at 10am.
Any thoughts?
4pm:
9pm:
on glass:
He only has a nitrate test kit, and that is reading 10ppm.
Tank is 38gals, has a single fluorescent bulb on from 8am to 9pm - 50/50 reef. Has a few plants in there, and doses general plant ferts. There are 11 danios, 1 red tail shark and 3 cats. The danios and plants are 3 weeks old, sharks went in 2 weeks go and the cats last week.
The only thing we can brainstorm is that while he was gone someone else was looking after it and may have been over feeding.
The first picture was taken today at 4pm, and the others at 9pm - just 5 hours difference. It's the same rock. Nothing has changed in the tank between the two times... water change was done at 10am.
Any thoughts?
4pm:

9pm:

on glass:
