I am sure I have deep purple, & pink-red, which dominates rock in my tanks, but most of my tank is dominated by green coraline.. growing on rock, & glass but not the gravel or on black plastic.. not sure what it is exactly since it doesnt seem to crust or grow at the perifery, like purple does. (at least its not hair algae). It is not slimey, and does not plate any live coral.
I constantly pull green algae out with the skimmer, so it makes me think it is a unicellular algae. Any thoughts ?
Nitrates, phosphates, and nitrites test out nil.. Probably because the algae sucks excess out.
It may be feeding my sps, and lps ..ect.
The purple and pink coralline grow over it, where flow is high.
I like the look of it, showing deep dark green to light yellow-green on newly introduced rock..
The tank has been stable for nearly 2yrs with only 2 partial water changes, and frequent addition of Calcium ion ( > 400 ppm) , and bicarbonate (> 135) I only occasionally add Mg ion and Fe ion but Havent measured tank levels for either. Specific gravity is 1.023 to 1.026. I use ordinary tap water (dechlorinated) and rain water for make up.. I find the latter to raise nitrates and encourage red slime, so it is only used infrequently.
Ok.. I probably do a bunch of stuff I shouldnt.. but I have a limited budget, and cant afford RO/DI water, or automatic controllers. I dont do frequent salt changes for the same reason. I do keep Ca ion very high .. it probably helps precipitate heavy metals from the tap water.
My shrooms, leathers and lps corrals thrive.. and are gaining mass
so they are forgiving, under less than perfect conditions.
Not sure if any of this info will help.. but because the green dominates the tank, I thought you may want to know what conditions it is growing under. I do raise chaeto in the return overflows. I use a refugium, and a skimmer on the 150 and 120.