135g fresh water conversion

[Catzklawz]

Hey all,
here's the specs, on my Tank for future questions

I am planning on converting my amazon tank into a Reef, after breeding cichlids for awhile I still spend more time looking at salwater fish in the pet store then the freshies so here I go
SPECS

72x18x24 134.65 gallons Glass
2x 160gallon rated penguin bio wheel filters
2x 460gph powerheads for flow
1 undergravel filter set up as an airgap undersand biofilter atm
6x32watt t5 10k/20k 6ft bulbs in reflector with ballasts
4 500w mh ballasts, gonna build the fixtures into new hood if needed

This set-up is way over filtered needed it that way for the messy fish.
Needed
skimmer set-up

[holyscoly]

i would dithch the hang on filters and get a sump or wet dti filter,i would also ditch the undergravel filter as it will only be a place to hold detritus i would also ad more power heads or go with a closed loop system,for the lighting i would go with three mh and the t-5s unless u wanna spend the money on the fourth one but 3 should be fine