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To be fair, those aren't pictures of healthy reefs. There's always going to be some tufts of algae somewhere, but actual healthy reefs really don't have that much algae aroundI have quite a bit of algae which I like and want as it means health. Algaes of some type grow on every healthy reef in the sea but of course we don't want it covering corals to the point of cutting off the light.
To me, just enough is perfect and much better than no algae. But thats just me.
I worry if I have absolutely no algae but unfortunately sometimes all the algae disappears.
I took the following pictures in the sea in the South Pacific or the Caribbean..
Yeah the disappearance of herbivores marks the start to middle of a reefs death spiral. Not necessarily because of pollution. Those pictures mostly show dead rock that used to be coral once with a few living corals strewn aboutSome of those pictures I took off of Bora Bora in French Polynesia which about as far from pollution as you can get.
The one with the hair algae was off Lanai a remote Hawaiian Island. Those places are not considered polluted.
I have been diving almost 60 years and find algae everywhere.
The algae is there because for some reason the herbivores disappeared. If the seas didn't contain algae what are urchins, manatees, slugs, algae bleenies, chitens, tangs etc eating?
There is no algae here in Hawaii because every hole is filled with an urchin. Which eat the algae as soon as it grows. If not for the algae, urchins would not be there.
Tangs are the most common fish on the reef. Every couple of minutes they swoop down to trim the very short algae. Thats about all they are scraping off the rocks which is why they appear bare.
Yea good thing I like purple! But had none till my son said I should! Now probably 90+ percent of tank rocks and some on the glass " tolerable" for now.Coraline will not stop.
Constant scraping the glass. I really wish I didn't have to do it all the time.
How did you get rid of the dictyota? Having a realHad a bunch of issues with Dictyota and managed to beat it back, only to be now stuck with pink cotton candy algae
Still fighting the good fight
My emerald crab loves itHow did you get rid of the dictyota? Having a real
Issue with it right now and can’t keep sea hares as they seem to keep going into my fans. That was the only thing I could find to eat it.