Good stuff if you have $5K laying around to blow. All for advanced growers unless you're rich. I've been upgrading for 4 years & can't afford that stuff .... lol.i am going to recommend a few things for gear. i will give a range and recommend our sponsors wherever possible.
we will stick to the five basics you need and go from there.
first - light.
light is the singular most important thing you will need. bar none. you really want to spend here if no where else. and you will get what you pay for.
when you buy a light you want it matched to the size of your grow space (tent). don't believe crap mfgr claims about a led being equal to 1000 watts etc. that is voodoo marketing. you want a led light that consumes about 30 to 50w from the wall plug in, per sq ft, for the tent / space you hang it in.
on this board i recommend
great fantastic choice : - @Budget LED , @NextLight
the first is one of the best bangs for your dollar on this board. they build a rival to probably the best known brand i am not recommending. the next on the list is hard in the running.
really really good choice : - @Mars Hydro
the number one budget choice on this board. i am a bit hard on them but there are many many folk here running a mars and love them. their newer stuff is better. there's always newer stuff with em. longevity / build components is the biggest issue.
i won't recommend individual lights from the sponsors, as they have different ones matched to grow space size. they all will consult.
tent
first - gorilla grow tents. bar none. they set the standard. we have sponsors on the board selling them.
make sure to reach out to the sponsors. there are board discounts for all these items.
the thing with a tent is you don't know what a good one is until you wrestle with a shit tent. poor tents destroy themselves in a grow or two and make the experience non-joyous. get a good tent.
really really good choice - @Mars Hydro .. really. they do have decent tents.
they aren't gorillas, but i would buy them all day long over near any amacrap offering. you might even swing a package deal with light included. ... i'm lookin at you fake smokesara (lol - inside joke )
maybe don't mention my name .. like i said i'm hard on them ..
exhaust fan :
vortex builds the best dog on the block. for just about any parameter. you might wanna skip over a whole bunch of stuff and get a vortex fan with adjustable control built in. vortex builds the best. adjustable control allows flexibility.
there are other brands. i actually run a couple cheap exhaust fans in my spaces, that i would not normally recommend. i got lucky on a vivosun vortex knockoff, and the other is a straight cage air mover most would find annoying.
there are two main different fan types. cage fan. or induction. vortex style is induction, it uses dual blades and is quieter. cage will move a pile more quickly, it used to be standard, and is louder. washroom fans are cage.
noise can be a factor in fans. i have the luxury of trading noise for dollars. i can run cheaper louder fans.
the amount of air movement is the parameter most judge a fan by. you want to exchange air in the space every 3 - 5 minutes.
filter
phresh is the current king. they have a couple different styles, i currently run a charcoal cone paper filter on the flower space i am really impressed with.
i've run a series of straight charcoal filters as well. until the last couple years i found even cheap brands worked well. in the last 3 yrs though stuff has kinda gone sideways with filters. now it's more brand quality oriented.
i still have older charcoal filters i bake and recharge. it's a stinky process for other posts.
do a phresh, or cheap filter and count on replacing.
ph / ec meter
all brand oriented quality. you can't get away from it.
blue lab , hanna, apera, all get top marks.
don't buy the ones that look like usb sticks. get the ones that look like dildos, preferably ones with the replaceable probes. you might be hard on them ...
personal recommend is the apera 60 series meters. they come with some goodies ( like a case ! ) and are rock solid against the rest. all are lab quality, once you get past the usb stick type junk. apera has the best pricing and bang for buck at that level.
i really hope this helps as a start. you can always upgrade as you go. it's what everyone does. good gear does save over the long haul, and offers a better chance of continued success.