lighting

[RJAG]

I have had a lot of live rock in my tank for ages without success. 37 Kg in
a 40 Gallon tank seems like over kill so following some advice I moved some
into the sump and removed the other media. this allows no dead spots flow
wise in the main tank but how do I light the sump.
I had calerpa in there but without success so should I keep the sump in
darkness now or should I keep the light on to promote any calcerous algae
that may form.

TIA

R

[Mark Cooper]

"RJAG" > wrote in
:

> I have had a lot of live rock in my tank for ages without success. 37
> Kg in a 40 Gallon tank seems like over kill so following some advice I
> moved some into the sump and removed the other media. this allows no
> dead spots flow wise in the main tank but how do I light the sump.
> I had calerpa in there but without success so should I keep the sump
> in darkness now or should I keep the light on to promote any calcerous
> algae that may form.
>
> TIA
>
> R
>
>
>

From what I've read here and elsewhere, you want some light on the
refugium to promote growth of the macroalgae. If you had no light on the
caulerpa, that is probably why it didn't go too well.

There are _much_ more experienced folks here who can comment further.


Mark

[RJAG]

I had a single 14000K tube but I've lowered it down til its just above the
water and the calerpa is just below the surface to see if the extra light
will help. I'm thinking of feeding the calerpa to the tang for I'm fed up
trying to get it to grow.

R

[BigHaig]

Calerpa and other refugem algaes will grow much better with the 5K-7500K
light range. If there is no Calerpa in the sump, you don't need light.




"RJAG" > wrote in message
...
>I had a single 14000K tube but I've lowered it down til its just above the
>water and the calerpa is just below the surface to see if the extra light
>will help. I'm thinking of feeding the calerpa to the tang for I'm fed up
>trying to get it to grow.
>
> R
>