actually if you only use moss and java ferns, you don't really need much ferts, esp base fert. however, using base fert will give you the flexibility to have other plants in your tank. as it is a 1 feet tank, perhaps you would be looking at plants with smaller leaves for stem plants, or some kind of creeping plant to create a nice carpet.
also, it depends on what lighting you use, because what plants you can plant in your tank depends on what light intensity you have.perhaps you can describe a bit more in detail, e.g. what kind of tank you want to have, heavily planted, or just some greenery etc.. prefer tall stem plants or low creeping plants (to provide more swim space in your 1 ft) and fauna you intend to keep (besides cardinals)
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