Help with Chaeto

[JurisHP]

My tank is 14 years old....I have always had high Nitrate and Phosphate issues, and have tried everything. I am now back to a refugium, and to that end am using my center compartment in the sump, lighted by a Kessil H160 Tuna Flora. I bought a baseball size (2 of them) bunch of Chaeto and now, a few weeks later, it has practically disappeared, and my Nitrates and Phosphates are as high as always.

I am running the light on the Grow setting at almost max intensity, for 16 hours/day.

A new batch of Chaeto is arriving today.

Any suggestions as to how to get it to grow and not die off so fast?

 

[Doctorgori]

I’ll defer to other here, but IME I have never figured this out either…I have 4 sump/refugiums, I can grow either chaeto or ulva but never both and when one thrive the other almost never does….
try ulva maybe and/or Brightwells chaeto grow…
I have nothing after that