Green Hair Algae

Need some help combating this algae unsure what is causing it but have a feeling my SIL dosed reefroids while watching my tank for me (ignore my car I just got home from work she wanted love)

Ive got this green algae that I cant seem to get under control. Parameters are normal except high Magnesium. Doing weekly 20% water changes to lower it but the algae still kicks in hard. Any suggestions?

Any tips on getting rid of green truf algae?

new phase, algae😢

My last post referred to this patch of Caluerpa Racemosa which has grown from about 3 heads to this, in a month.

Then I realised it couldn't be seen in the video I posted. Here we commonly call this sea grapes (not the bubble version).

Hopefully, I can keep it from extending further down into the path of the alveopora but to fill out and grow up and across this live rock. It's one of the things growing in this tank that I like the most.

Thoughts on rock with the growth? Is this Normal or do I need kore cleaners?

Blurry video, just another lazy day to scrub that algae off 😅

We fought off an algae outbreak and are coming back strong

I have this 15 gallon tank best equipment out and there is this aleage I can’t get rid of can someone I’d it and help me ?

This GHA is whooping me. ISO blue tuxedo urchin - Houston Area…

I need help. How can I get rid of this algae. The back wall is covered in a green algae, I thought it was hair algae but I’m unsure, and all the brown algae on the bottom. What can I do to fix this?

The only downside to a bare bottom tank is the unsightly algae 😂🤦