+11st tank - i'd do the following. Use a white sand substrate. lose the wood. add a bunch of interesting rock - form a rock wall for your affricans. lose the plants. add some loaches.
2nd tank - I dunno - I kind of like it really.
Deep six the red gravel and chuck the wood..The other tank looks pretty good.
What should I put instead of the wood. should I change the gravel into something else like more natural.