arite ive done a lot of researcch bout lighting and i now have a 1000 watt convertible mh hps light. and im going to use the mh for veg and the hps for flower but someone jus told me if i have a 1000 watt mh for veg i need 4000 watts of hps for flower, is this true???? or can i jus use the 1000...