Decisions...

peacocks like the rocky caves like the mbuna do. add more rocks - your tank can hold more than you think. Is that drift wood in the middle? If it is your PH may be too low for africans. lots of rocks and crushed coral. We even have a couple of pieces of coral skeleton in the tank.

http://www.aquariacentral.com/forums/showthread.php?t=106824&page=4

this is the page with the latest pic of the tank (and a video made a couple of weeks ago - the video in post 33 is the best quality.

The latest pic is in post 34.

cichlids are great fun and real characters. they can really get you trained.

courtesy of http://fish.mongabay.com/mbuna.htm

WATER: Like other Lake Malawi Cichlids, mbunas should be kept in water with a pH of 7.5-9.0, a water hardness from 10-20 dH, and a temperature between 75-81°F (24-27°C).

B: Mbunas are polygamous mouth-brooders, so for breeding, one male must be kept with several females. A good deal of rock work should be used to provide retreats for females, as the male often will be aggressive in his mating attempts. Many species spawn rather readily in water with a pH of 7.8-8.3 and a water hardness of 10-16 dH. The temperature should be 77-82°F (25-28°C). Usually only a small number of eggs, from 10-60, are laid. They are generally fertilized via the dummy-egg method. The female mouth-broods the eggs until they hatch after 20-21 days. She will usually continue to care for the fry for another 1-2 weeks. Start feeding the fry with powdered foods and newly hatched Artemia .

Courtesy of http://www.fishforums.net/index.php?showtopic=27706

The ideal PH for mbuna is in the general region of 8.0, but they are very adaptable and can handle a fairly wide range. If your tap water falls between 7.5 and 8.5 you have good water, and are best off using it as-is, with no adjustments. More important is KH, which acts as a buffer and keeps the PH stable. A KH of 8 or more is most desirable

We try to keep our PH at 8.0 - 8.2 for optimal breeding. Our water here is rather soft and we had to add the additional coral to offset the driftwood

If you are going down the mbuna route i would say you need to double the amount of rock in your tank at least. That doesn't mean that you have to do it straight away you could add a few yellow labs and then add more rock as you introduce more fish, that way if money is tight at least you will have fish to look at. I always say that my tanks are a work in progress and im never done adding bits and bobs it keeps my tanks looking fresh and can help with aggression as the fish have new territories to explore and claim.

Steve.

Yeah - we chose the rock carefully and added a few at a time

More cowbell! err More rocks!!! Texas Holey Rock is what you want and plenty of it.

add some more rockwork if you want it to become a mbuna tank