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I would exhaust with a 12" inline fan and pull in fresh air with passive intakes. Portable air conditioners are useless and mini splits cost a lot in electricity.

Looks like you have a serious thrips infestation. Use spinosad to get rid of them.

Indoor. I don't think it was my fault that they hermied. Sannie got the strain from someone else.

How often do you change the water in the reservoir?

Sannie's Seeds. I grew them a few years ago and the plants hermied.

Can you grow healthy plants without air? No. You need fresh air coming in to the room and you have to exhaust the hot smelly air out through a carbon filter. Proper ventilation is one of the biggest challenges in setting up a grow. If you don't dial in the ventilation, you will never grow...

That trimming you did on the bottom was fine. Do some more trimming in the second week of flowering.

What kind of intake will you have? If you have a passive intake, a 6" will give the space some nice fresh air intake and air exchange. Can't go wrong with a lot of air.

The only way to really get rid of mites is to use a heavy hitter, Avid, Floramite, or Forbid. Toxic chemicals for sure, but I'd rather use that stuff once or twice then subject the plant to repeated doses of Azamax, no pest strips, neem, foggers, and all that other stuff that doesn't work.

Nice healthy plants you have there. If the leaves at the bottom are lying in the dirt, just take them off. No reason to be squeamish about removing a few leaves and branches. Pruning the bottom branches and any weak inside branches that won't get much light allows for better air flow through the...

It's way too early to start culling. Wait until they are much bigger, at least 8" or until the room gets crowded, and then see which ones are strongest. 1.5 feet above the plants when they are this small is fine. I don't understand why you put the 1" rockwools in 4" rockwools instead of just...

They look fine. On your first grow you can't expect to get the kind of massive buds and yields very experienced growers get. Every strain is different too, some produce big buds and some smaller buds.

My biggest mistake was having no intake and no exhaust, thinking opening the closet door when I felt like it would be enough air. Got some spindly sick looking plants.

Yes, you are overthinking it. I've had much bigger light screwups than that. Just put it behind you and move on.

You cannot grow without fresh air coming into the room and the stale air being exhausted out. Period. Plants need air to live.

3600 watts puts you well into the sketchy electricity use range. If someone else is getting and paying the bill, you can't have anywhere close to that many lights. I would say even two 600s is pushing it.

Agreed, too early to be fertilizing them. What do you mean you gave them 2 tsp? Did you mix them with water? Were you following dosage directions?

IMO you have too many plants crammed in there, so the only part of the plant that is really getting light is the top, and the side branches aren't getting much light or producing much bud. Try half as many plants, giving them each enough room for the light to shine on the branches.

May be overkill. Two 1000's shouldn't generate a huge amount of heat in a room that size, your 745 CFM might be enough, of course depending where you live and whether you run your lights at night or in the day. What kind of intake do you have?

How many plants depends on your style of growing and how big you are planning to let them get. You can put four 1000 watt lights in that room.