Unknown algae

[Ash321]

Anyone know what type of alage this is please is slowy taking over certain areas of my tank.

Po4 was around 0.03 a few days ago on elos high res and nitrate 5ppm. Tia

 

[rkpetersen]

Looks like Ulva (sea lettuce) to me. It is sold for stocking refugia as thin soft sheets, and it does grow well, but can be invasive in tanks, looking like this.
Many herbivores - tangs, rabbitfish, snails, crabs, etc - will gobble this stuff up.

 

[Alexreefer]

+1^^^^^^^ not really bad for you. one of the desirable macroalgae. can be siphoned out

 

[Ash321]

Looks like Ulva (sea lettuce) to me. It is sold for stocking refugia as thin soft sheets, and it does grow well, but can be invasive in tanks, looking like this.
Many herbivores - tangs, rabbitfish, snails, crabs, etc - will gobble this stuff up.

Thanks guys will get on it