Help!! Tank rehab

Ive been fighting a losing battle with algae that started with a frag I didn't dip. Now I'm thinking about just turning off the lights for several weeks. In order to do this i would need someone to house my inhabitants while the lights are out. It may be a week or two before I can do this but I'm looking for someone who can care for them.

Inhabitants
Kole tang
Wyoming white clown
Yellow damsel
Yellow coris wrasse
Fire shrimp
A few snails and hermits
Let me know if you can help.

Thanks
Wes

 

I've tried natural means of control, peroxide injection, pulling it by hand, 20% water changes up to 3 times per week etc. Some of these have worked but not well enough. I keep getting it back. Only coral I'm worried about is a Duncan coral. It will have to go to someone as well.
Not sure what kind of algae it is. It's a really dark green and very thick. Almost carpet like. NOT hair algea.

 

I can replace the corals

 

I'm willing to try anything

 

Hopefully this works

 

No turbo snails?

 

No algea scrubber. I replace GFO every 5 weeks or so. If I use more GFO would it benefit or be pointless?

 

Nitrite=0 ppm
Nitrate=0 ppm
Ph= 7.4
Amonia=0 ppm

This is all in currently able to test for.
I just did a 20% water change 2 hours ago.

 

Tank and sanded are both a year old. I done clean the sandbed because I was under the impression that there are beneficial organisms living in it. I have seen hundreds of pods and other things when I move anything around the sandbed.