DSB Qns

[Oceandeep]

Hi,

Can any expert help..... I just finish my water cycle..

But why.. the sand bed have black spot... and also algae

on the sand bed??

[Oceandeep]

another pict. Is it normal??

[andysho]

maybe can give more details of your water parameter

and your equipment~~~

[Acanthurus pyroferus]

its natural , newly set-ups go through this phase.... get a sea cucumber to clean the surface as they do a good job.

[Nickel]

Hi Oceandeep, I had asked the same question 2 days back re the black growth in DSB. Tanzy responded and I qoute below :

"That's the anaerobic region of the sand bed. The black stuff is hydrogen sulphide. Just don't stir the sand and release that stuff. "

Hope the above helps.

[Tanzy]

Oceandeep,

It seems you have mixed different grades of sand. The larger particles will float upwards while the smaller ones will sink downwards over time. Don't be surprised after a few years your DSB is the other way round.

That brown stuff looks like diatoms. Part of the algae cycle in the tanks.