Spider Farmer have the Samsung Led (Beat on the market) and 100 Watt, Mars have 150 Watt & epistar led, thats the different. The colour Spektrum is the same....
Hey Gaby I have the TS1000 and love it but I can confidently say it will not flower a 3X3 tent. No experience with the spider farmer. Check my grows out for TS1000 grows. I grow in a 27X27X63inch Mars tent and the TS1000 fits it perfectly. Hope this helps but you can't go wrong when buying a quantum board IMHO.
I prefer the MarsHydro over the SpiderFarmer , I've seen a test by migro on youtube that is giving a good idea of that light ( Ps: migro is also selling his own light and they are pretty neutal during they test )