The Mars / Spider issue is pretty easy to see , they are the same company ......
They flood RIU with wonky “ contests “ to keep interest alive. Many old “ blurple “ companies are jumping on the “ quantum board “ band wagon .... even ViparSpectra .
Mars / Spider share the same distribution centers AND retailers.
Notice : they even misspell “ United State “ the same. Locations are the same...... etc.
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Lots of people want to argue this but it is what it is. Even vendors in China ( alibaba ) build these as knockoffs at even cheaper cost , so it makes one wonder . But , I will say I have noticed some good grows running the sf 2000 / 4000 and SP250 mars bar .
ANY LIGHT WILL GROW WEED ..... cheap lights ? ... been there done that. Just remember you get what you pay for......
and it seems you are finally getting watts as advertised unlike some BS 1000w or 2000w claims.
Spider Farmer has been a grow light seeing a lot of popularity due to reasonable cost.
At least it’s better than those disco blurple panels.
GL