The Lotus 600W is a safe and reliable metal-cased, vented ballast from Maxigrow, suitable for any budget.
In our opinion the best budget ballast on the market, it runs both HPS and metal halide lamps and delivers the full 600W to the lamp at 240V output, whilst it's 'smart-ignitor' stops the ballast from igniting a hot lamp after a power-cut.
Wall mountable with a 2 metre cable. 2 year no-quibble guarantee.