hi...
i was thinking of starting a 1 ft tank n keeping some java moss and java fern...nothing tt would need a substrate..was wondering if a undergravel filter will be adequete for this purpose...should i inject diy co2 or are the plants healthy enough to do without it? because i eventually intend on keepin some fishes once it settles...i'm worried the concentration of co2 will be too much for the fish to handle..
thanx
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