Flowering Input

[jimmyjoe]

Hi everyone. I have 3 plants that are 4.5 weeks into flowering. As a new grower I am seeking comments with regards to this stage. I do not know the type of strains except one is a sativa (hybrid?) and the other 2 appear to be Indica dominant hybrid.
The sativa appears to be a autoflower as it started getting flowers around 4 weeks. I kept it in veg mode until the other 2 plants were ready for flower@ 6 weeks.
The plants look reasonable from my perspective. nice and green. Ph from the reservoir is at 6.0. I have a little browning at the tips of some of the sativa and some spots on a few leaves. i am probably picking up maybe 3 leaves a day that are falling from the plants at the bottom.
The trichromes are clear on both and the sativa has maybe 5-7% brown pistils and the other 2 have only a few brown pistils per upper buds.
I am curious about the spotting and the dry/brown tips on the sativa and the curl in the leaves on the Indica hybrid.
Any comments and input?
I am using a 400w HPS and 32/33 days into flowering. Hydro operation.

[Cloud]

Looks pretty good for a new grower. Im pretty new as well but i think i spot some light stress. Fan leaves are curled up a bit in some pics. Might be causing some of you other issues as well.

[D.A.A.S.69]

I think they must all be autos, and as Cloud says ,some leaves do look like they are canoeing, how far away have you got your 400watt, ?
How hot is your tent ?
To much direct wind will make them do that to.

[jimmyjoe]

What makes you think they are all auto flower? The two indica did not develop any flowers until I flipped the lights to 12/12.
The closest cola is 9 inches from the light. I have to put my hand a half inch from the light before it becomes too hot for my hand to sit there and at this stage I am unsure about bending as the branches seem quite firm. I am not getting very much new growth (if any) so I am hoping I can ride it out with just some minor pulling away from the light if they get any closer.
The tent runs at about 71-74 degrees.
Direct wind is a distinct possibility as I have an oscillating fan that blows on the top and is probably too much in the space. I will tamp that down a bit, Thanks. Any ideas on the spotting?

[D.A.A.S.69]

My bad, I didn't see where you flipped the switch, the 2 indicas-hybrids ain't autos then.
I don't know nothin about hydro, or what you been feeding them, But I'm sure your using calcium aren't you ?
It's hard for me to see the spots with the light from the hps. Plus my eyes are kinda old. lol
Some of these guys on here use hps, and they can help you better than I can. And are used to that yellow color.
My light is white,
Looks like you been doing a good job though.