led 300 watt viper grow

I got the wring size tent but using it, around 4ft x 6ft its big , I got a 400 watt hps but I start with a 45 watt led then bought another 15 watt led as I was hoping it would help,there the chinese copy shit so I bought a 300 watt viper true watt 135 or 185 watt, then I see some difference...