I'm going to be planting my 260 (7x2.5x2) tank and am looking for a bit of help. I won't be injecting co2, lighting will be four 54w t5ho bulbs with reflectors, will this be enough lighting for plants with low to moderate lighting needs? And any suggestions on a substrate that won't cost a fortune on a tank this size? Is it best to cap substrate with sand? Thanks in advance.