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Thanks for the replies, guys. It seems that I simply used an outdated source of information as reference. I'm really glad I won't have to get another part for my setup and worry about frying anything!

The thread I quoted is pretty old, so maybe I don't need a contact relay switch? I should've been more specific. I'm thinking of getting this one: https://lumatek-lighting.com/lumatek-250w-240v-digital-ballast/ I only want to use a single 250W lamp.

I've read this: https://www.marijuanapassion.com/threads/growfaq-electrical-section.1965/ So the takeway is that I need a contact relay switch to avoid frying my lamp timer. Three questions: - do they all look like this (box with outlets and a plug)? - should I connect everything like...

They can stay fixed at the top? I guess that makes sense. I'm just looking at lots of pictures, so it isn't that obvious to me.

NOT having to lower the lights (with filter and fan) at all would be the whole point. I'm thinking of moving the POTS down as they grow.

Just for the record - I have zero experience. I'm gathering info and making a checklist of parts I'll need. My growbox is a regular 21 x 34 x 77" wardrobe. It has those little holes for installing shelves at different heights. My idea is that I will install the lights + filter + fan + ducting...

Does that mean I shouldn't worry so much about height? This is a completely random example, but Supernova can supposedly get as big as 78". Is this something that happens only when you do everything perfectly?

I'm prepping a 21 x 34 x 77" cabinet with the usual "semi-pro" setup: - 250W MH (blue) and 250W HPS (yellow) bulbs + spares - 250W adjustable ballast - intake and exhaust (6" everything) - exhaust fan, carbon filter - air cooled reflector - small oscillating fan I *THINK* it should be enough...

Filter -> fan -> light -> exhaust. Right? Another question about the growbox size: Would 32 x 20 x 71" (80 x 50 x 180cm) be enough for two average sized plants (3-4 feet), side by side? Or is the length (20") pushing it? From what I understand, I don't want sativas (too big) or autos (could...

So, a big cabinet is a must. I see. I guess I can get something significantly bigger after all. Anyway, can anyone answer question nr.3 about the reflectors?

So far all I have is a wood cabinet - 23" x 21" x 40" (58 x 52 x 100cm). White interior. The plan is pretty standard: - only 1 or 2 plants in fabric pots - one or two small oscillating fans (6" or 15cm) - 250W HPS 2100K 32000lm bulb - 250W dimmable ballast - air cooled reflector - exhaust fan...

I own the apartment and nobody else has the keys. Can you tell me more about strains? Are there any that aren't too smelly? This is my main concern since noise and conspicuousness aren't that big of a deal.

Sup. I'm completely new to growing and I'd like to ask for advice. I live in a big apartment and don't get many guests, but I want to be extra careful. I'm looking for a strain that's: - not too smelly (I want to use one or two carbon filters anyway) - this is very important - not too big (fits...