I have a pretty small set up. Two 90x50s the the closet and there's a 2x4 set up beside that little bedside unit for about 1/2 the year. Hard to fit the tents In but haven't broke em down for years luckily. So 10ft² for most of the year, 18ft² when I have all three tents going.
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I run 240w chinesium quantum boards (those 65x20cm ones, kingbrite boards with sosen or meanwell drivers) in the smaller tents dimmed down to about 150w. I think those setups cost me about $260-280 each including the filter, fans, tent and lights. Have done me 5 years with no rips, no tears, no zipper issues and minimal pinholes.
The 2x4 runs either a mars 250w quantum board or a 320w fc4000 when I get around to setting it up again. I can pump out two plants on each of the 90x50s with about 3-4 weeks veg. Usually get about 150-200g out of a 90x50 If I actually fill it.
Have a bunch of 4x4, 5x2.66 and 2x4 tents that I can't set up here due to space sadly and a few lights laying around.
I use the mars 10 speed clip fans, generic inline fans (hon/guan) and evergrow or eBay filters with no smell issues however I do have another scrubber In the closet.
The 90x50s are a good size for two small plants. Easy to hide here too.
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The 2x4 can fit three small plants or two plants vegged for 6-8 weeks.
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All of those were TSE chucks bar the second pic..