I've grown with fluoro tubes, it can be done ... if your 'purple' light is like a 'Day-Glo' type, ditch it immediately ... ultraviolet light won't work at all ... the cheapest lamps to use, are at your WalMart, etc... use the 'Daylight' type for vegetation (blue wavelength) ... use the 'Kitchen and Bath' type, for flowering (red wavelength) ... keep the tubes an inch above the plant tips ... fluoros don't penetrate ... keep an oscillating fan going ... good growing ! :thumbsup: ... your yield will be small, but the experience you gain will be BIG ... I worked my way up to sixteen 48" tubes, before switching to high-pressure lamps, the difference was amazing :smokin: