I have a few varities of plants in my aquarium now. The problem is, it doesn't look appealing where they are (as compared to the photos seen here) I realize that My tank will not look like those as its a community tank that has different fish (bettas, danios, pleco, tetras ect...) My question is is there a site or "rules" as to where not to put plants? (foreground, backround and midground). I would hate to put my plants in places they won't "fit" into. (ie putting a large plant in front of a smaller one) All my plants are relatively small right now.