Hmmmm.....
Okay then, we're talking about the ultimate/final aquarium for your Pugnacious One, correct?
Here is what I can offer that may help.
- Lighting -
Dim. If you go with high-octane, high intensity LED stuff? Your Cichlid's sensitive eyes won't appreciate it, but the Algae definitely will. One of my coolest aquariums was a 55 gallon 'grow out' tank (Baby Vieja Cichlids... yeah), with wall-mounted, Halogen track lights mounted above it. I placed silk floating 'lily pads' in this one, and the moving shadows across the Cichlids and bottom of the aquarium were kind of spooky and extremely cool to look at.
- Substrate -
Pool Filtration Sand. Purchase the GOOD STUFF at a Spa/Pool Supplies retail store. The larger, more uniform sand grains will make rinsing it out a LOT easier. Plus, the sand looks nicer. Your little Cichlid friend will enjoy digging around in that stuff!
- Air Stones -
I like them! (not everyone does....
PHILISTINES, I tell ya'). BONUS Points if you build up a big rock pile (or resin cast medieval castle) with the air stone underneath it. I have personally found that the little bubbles rolling up and through that stuff are endlessly cool....
- Plastic or Silk Plants -
Go tall! Plants that reach all the way to the surface will give your Cichlid a sense of security with those 'walls' of plants he can swim in and around.
- Caves and Hiding Spots -
More than one. EVERYONE wants choices - your Cichlid will be no different. Provide dark and secure caves.
- Back Wall -
Cover the back of it with black paint, or at least a cool scene of some tropical paradise or something! Your Cichlid will appreciate an actual opaque 'wall' to hug now and then, and the tank will look better without a view of the wires and other assorted aquarium paraphernalia out on display.
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And now, important stuff:
Get one. Use it!
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The most important thing I can recommend is this.....
Set Up And Build This Aquarium Out, So You'll Be Happy Looking At It.