Algae identification

[fvlewg65]

Thanks for all of your input. You are right, when I test for phosphates the result is zero or almost zero. I will try taking a reading close to the sand bed in the morning. The food I had been feeding was Frozen Mysis Shrimp, then I supplemented it with Nutrafin Max Marine Complete Food slow sinking morsels, finally now they are completely on Spectrum Thera+A. The color of the algae in more purple brown in real life than pink.