low maintenance? is easy make a tub with one of those 10$ air pumps ad water and perlite to the bottom of tub, place air stone from pump in there( i h2o2 to the water when i first introduce colonized tubs, jars cakes into it) 3 or 4 holes in the top filled with poly or tyvek, something that will allow it to breath, positive pressure from the air added from air pump. get your basic 3 dollar extension cord a 9w flouro bulb 5000k, and a hole drill 1 1/4" to fit the bulb adapter thru
http://www.lowes.com/pd_72577-334-738V-SP-L_4294722558__?productId=1099209&Ns=p_product_avg_rating|1&pl=1¤tURL=%3FNs%3Dp_product_avg_rating%7C1&facetInfo= to
(this way will allow you to daisy chain more tubs should you choose)
you have to think though in mushroom talk bulk is a relative term, you can do a "bulk" grow inside of a 4"x4" tupperware, its more a method of growing, where you take your spawn and innoc a pasteurized substrate in order to grow the mushrooms in a bed, you could do "bulks" in all kinds of container, half of a gallon bad, a little tupperware from sliced turkey a pot ect. size isnt relevant just a style. why people do bigger bulks is for obvious reasons but also to get larger more natural forming mushrooms, depth of substrate is integral to this.