Dose anyone know that this clear/white mucus like algae is?? Its taking over my tank and i have tried everything from water changes, filtration changes, and manually removing it.

Need some help please!!

I just recently got a hammer and toadstool frag 4 days ago. At first the hammer was open and lushes but now seems to not open fully and is little saggy, the toadstool still has not opened up. I tried relocating the toadstool to a different location with less light and flow after the 2nd day. Any recommendations to what i may be missing?

I plan on doing a 2-3% water change with RO water to help bring the Alk and Phosphate down a little.

The tank is a 14 gal Biocube 8 months old.