1st grow, & having fun. But I am kinda worried!

Hello everyone.
1st time grower so I'll give some info. If I left something out lemme know.
Oh yes I made several mistakes starting out on this, but its all a learning curve.
Biggest mistake get a good meter(s) !!!!

(3)Rude Skunk, (1)Samsara Black Angel, (1)Low Girl Assassin. & a couple more...?
All 7 plants from Auto seeds on 3/23. So I'm about wk6.
12gal res- 7gal full, 4 small 2inch air stones always on.
Water on every 3-4hrs for 30mins approx. (Cheap timer)
PH 6.0-6.2 PPM 1500 EC 2.0
FF Big Grow, bloom, hygrozyme, humic acid. = had a clear snot on roots, added HYGZM gone next day whew!
400w HPS @ 12inch, plus 3 mixed cfls, 18/6.
Water temps 60-72F, Air Flow/Temp ok for now- 60-85F.
Lights off 4pm - 10pm, Hi power demand times and hottest part of the day....
My 4 big plants in main res are 10-12inches tall & 10" in diam.
The 3 runt plants- I streched, drownd, beat up, kicked, punched, slapped etc.... are stunted at 6-8inches
but they are showing normal looking flowers????

Things seem to be progressing, but I don't like how the big 4 are budding, just dont look right.
Are these males?, Hermies? Normal? IDK.
I added a few pics but they arent very good, my GF has my good cam....

The fan leaves are really large, 1 is 8in long and prob 5in across on my biggest plant.
All comments and suggestions are appreciated.
What should I be doing I'm not?
Thanks

looks like a female to me mate. The males you will know are males, they form packed clusters of lil balls to begin with on the end of tiny stalks (supposed to look like minature green grapes...in structure) the female flowers are just like the first pic, kinda white/transparent pistils. a male flower amongst female flowers will be very noticable, because if its a male they will all be grapy things, if its a female they will b pistills, and if its a hermie, the male grapy things will open and project a miniature banana looking thing out (the bright yellow colour will stand out amongth the female pistils - the yellow colour is pollen dust, and if u flick it the pollen with shake off and pollenate the pistils) the plants look fine tho. not sure bout u set up i dont do hydro tho

LB
TY for the reply....mate? Where are you? Down Under?
Well the first pic I'm not concerned about. they prob wont produce much anyway.
I have 2 like that, 6inch tall stunted real bad, I really didn't treat them right, 1 nearly died twice, but weeds are Tough! LOL

The 2nd pic is the one I'm concerned with, I have 5 plants looking like that. The buds are long, no hairs, look a bit fluffy, just kinda look odd....
Up close it looks as if it might have "something" inside. My pic sucks I will try to get better 1.
They just don't look like the 1st pic or pics posted on the site. Hopefully they're F, if not, at least I know how to grow males ! HAHAHA
I will get a better shot of it.

As I re-read your post a couple times, I feel better because I do not see any clusters as you describe....

Thanks again mate!