Can Macro Algae survive at low.......

[mmgm]

salinity levels?

As part of a system upgrade I am setting up a permanent QT tank that will be used to quarenteen all new arrivals for 6 weeks prior to placing into my display tank. During the six week quarenteen process I will be using Hyposalinity to insure no ich or parasites are present at the end of the QT period. The goal is to set up a permanent QT that can be easily cycled between 1.026 to 1.009 salinity as needed. At 1.026 I will be able to run the QT off of my main display tank loop. During Hyposalinity I will be able to run the QT as a separate closed loop system.

While running on the QT loop I plan to set up a small refugium/sump with macro algae that will be connected to the QT.

Can I run the fuge at low salinity levels without killing the macro algae? I here Caulerpa is almost impossible to kill...... I also have some mangrove trees in the sump.......

Thanks in advance for the advise........

 

[hmott]

I had prolifera in a seahorse fry tank with salinity as low as 1.012 but never went lower than that. It didn't grow and we had a bit of die-off when we dropped the salinity. But we also moved tanks and light on it at the same time. I never saw it grow at all at that salinity but the lighting was poor.