55 Gallon Mbuna Tank

[COG Commando]

I finally uploaded my pictures of my 55G Mbuna aquarium. I plan on removing the middle rock and replacing it with more "boulder" type rocks as seen on the sides of the tank. Hopefully somewhere down the line I can start building a 1000+ gallon mbuna biome, as I really love these fish and their beautiful colors. The tank in the pictures seems cloudy, but these pictures were taking about a month ago and the tank has cleared drastically since then.
Tank info-
2 Marineland Penguin 350 Filters
Marineland Stealth Pro 200 Heater
60 lbs crushed coral substrate
Fish- as far as I know (which isn't too much haha) the species are correct
1 male and 1 female Melanochromis johannii
1 male and 1 female Metriaclima lombardoi
1 male and 1 female Metriaclima estherae
1 unknown Pseudotropheus crabo
1 female Melanochromis auratus
1 male Pseudotropheus acei
1 male Labidochromis caeruleus
All the fish are under 2.5"

The quality of the pictures isn't fantastic, as my camera is broken, I had to take them with my iPhone.
Without further adieu

 

[valderi123]

cool tankl

 

[Brian_Indiana]

Looks nice. IMO, a black background would really set it off.

 

[Yellow_Perch]

im not gonna sit here and lie i dont really know much bout african cichlids compared to CA/SA cichlids..but it says mbuna which is a type of fish right cause if not i would of guessed auratus but also can i say lovely tank and a black background is a good idea

 

[indiana hurricane]

Can you lower you heater some, just behind the rock.