Help! Over run by Sea Lettuce

[HermitFish]

So I bought Sea Lettuce, Red Ogo, & Cheato from Algae Barn to put in my sump. The problem is I didn’t respect the Sea Lettuces ability to sprea, so now my rocks are covered in Sea Lettuce. I have 3 tangs, a few hermits, big urchin, and snails, and currently dose Vibrant 2x/week. I also already have some corals so lights out is not a great option. I’m slowly seeing progress but advice would be appreciate.
150gal 5*2*2
I do weekly water changes ~15%
1.026 SG
1 NO3
.06 PO4
8 ALK
450 CA
1400 MAG

 

[AlgaeBarn]

A few Urchins would make quick work of that and a foxface should be helpful as well

 

[Seabiscuit]

I wish I had your problem. My sea lettuce has been struggling to survive now for several months. What kind of light do you have?

 

[AlgaeBarn]

I wish I had your problem. My sea lettuce has been struggling to survive now for several months. What kind of light do you have?

What are your water parameters?

 

[HermitFish]

I wish I had your problem. My sea lettuce has been struggling to survive now for several months. What kind of light do you have?

I have 2 kessil AP9X because they’re in the DT. But I was growing with a kessil H160 Tuna Flora in the sump

 

[Seabiscuit]

What are you water parameters?

1.024 SG
1-4 NO3
.02 PO4
11 ALK
400 CA
I have a budget kzkr 36" white/blue led light with 8K color spectrum (I added the link below) and an led magenta light strip on top of the tank. I don't have a par meter and the light I have doesn't have par settings but I am getting 1100 lux at the depth where the plants are located. The Gracilaria Hayi I bought from you is doing well. The sea lettuce just hasn't done well.

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[AlgaeBarn]

1.024 SG
1-4 NO3
.02 PO4
11 ALK
400 CA
I have a budget kzkr 36" white/blue led light with 8K color spectrum (I added the link below) and an led magenta light strip on top of the tank. I don't have a par meter and the light I have doesn't have par settings but I am getting 1100 lux at the depth where the plants are located. The Gracilaria Hayi I bought from you is doing well. The sea lettuce just hasn't done well.

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Its possible that you do not have enough nutrients for both but usually the sea lettuce would be out competing the other macroalgae

 

[Seabiscuit]

Its possible that you do not have enough nutrients for both but usually the sea lettuce would be out competing the other macroalgae

That's good to know.

 

[schuby]

What all do you feed your fish in a day? Maybe you're feeding your Tangs too much so that they are not grazing on your sea lettuce.