Are these parameters good for an anenome or hammer coral?

[Hectorg214]

Yes, in my opinion your filtration isn't capable of supporting the tank. This is why you get algae growth; you haven't any means of exporting the nutrient.

The best way to get your phosphates down is water changes. And with your current load, if you can't upgrade your filtration, weekly 20 gallon water changes are what I would suggest.

I might look into a hob overflow and sump but worried about flooding. Just have to do some research.

 

[Dom]

I might look into a hob overflow and sump but worried about flooding. Just have to do some research.

HOB overflows have come a long way, and are not a bad way to go. And a sump doesn't have to be anything fancy.

Research DIY sumps. You can make one out of a Rubbermaid bin or a 20 gallon long tank.

Keep it simple! Let me know how your research goes.