This is my first time. I made a DIY 60w led panel with 3w leds, 15 red and 5 blue. The total cost with aluminium, fan, thermal compound, wires etc was about 40$. Then I added a DIY humidifier, to keep the RH at 70%.I'm also using a CO2 generator with a pair of bottles of Coke, yeast and sugar. I...