What would you do to better this system?

[fishyfishy23]

Any suggestions on what equipment to add to my 2 yr old 75 gallon reef system. I have Softies & LPS corals no SPS yet.. but may be a possibility in the future.

Budget: $500 or so

Currently we have the following:


ETSS 800 super skimmer
2- 175 watt MH
3- 250 Watt Heaters
Iwaki return pump
Auto-Top Off/RO unit
150 gallon rubbermaid sump/frag tank
Refugium w/ mangroves & macro algea
3 basic powerheads in rockwork to help keep detrus suspended.
Hydor Koralia 3

Livestock:

Yellow Tang
Clownfish pair
Pajama Cardinalfish
Longfinned Fairy Wrasse
Damsel
Longnosed Hawkfish
Mandarin Goby

Dogface pufferfish in my 150 gal sump

What would you do?

[scarter]

kalk reactor and better powerheads