Please help

[Evie123]

Hey everyone,

I am battling an algae outbreak and could really get your help with identifying and battling it. I attached multiple pictures for you guys. I myself am thinking that these are red slime algae and hair algae taking over. It however could also be dinoflagellates. I hope you can help me identyfing it and would love your opinion about how you all battle this problem.
Next to the pictures I also attached my feeding/dosing schedule and below you can see the water parameters. It would also be of great help if you guys can help me where I can reduce my feeding. I do a weekly 30% water change.

I have a 40 gallon red sea max e led 170, without any additions, except for one blue marine wavemaker 4000. My water parameters are:
NO3: 0 ng/L
NO2: 0,10 mg/L
PO4: 0.03 mg/L
NH4: 0.10 mg/L
pH: 8.3
salinity: 1.022

 

[ReefStable]

Personal Thought is (As Mentioned) Red Slime and GHA.
Usually this is from Nitrates and Phosphates. Though they don't always show on tests because the algae/bacteria are consuming it.

As far as why, it's almost CERTAINLY from your afternoon coral feeding. Most of the foods you're adding, even large coral farms only add 1 or 2 times per week! You're adding that food daily.

Looking at the size of the tank, and the coral in the tank, don't do ANY coral feeding... None of these coral need, nor will likely use any of these coral foods. They all seem to be easy photosynthetic coral, the food will just add to algae.

Just feed the fish and you should slowly see it fix itself.

As for getting rid of the existing problems, here are some resources:

How To Get Rid Of Green Hair Algae

Green hair algae, also known as GHA, is a long strand of fuzzy algae that grows on the glass or rocks of the aquarium. GHA can grow quickly and starve out corals.

reefstable.com

How To Get Rid Of Red Slime Algae (Cyanobacteria)

Red Slime Algae, or Cyanobacteria, is a sheet of slime covering sand, rocks, and coral. If left untreated, it can coat and kill corals in the reef tank.

reefstable.com