First indoor hydro multi strain multi media grow

hello all please join me on my first ever indoor grow. I did countless hours of reading and research and after finally getting the green light from the wife I've converted my basement bathroom into the lab
I wasn't sure which medium I wanted to use so I currently have 2 drip systems 2 dwc buckets and finally 2 2 gallon pots with a 50 50 coco pearlite mix.
I'll be running 2 Skywalker kushes 1 blue widow 1 white widow and I have 2 autos going as well ( really want sumtgin to smoke while I wait)
Lights are 600 watt mh n hps and also a cheap led from China that I plan on using for the autos. I'm about 14 15 days in from popping 100% success rate using rapid rooter cubes

Runnin GH 3 part w diamond nector and Dutch master zone as a preventative (my res temp hits 74 75 some times w lights on)

WW in dwc still no roots yet bout 15 days old from seed

Skywalker 15 days from seed leaves are fused on the second set not sure if this is a big deal FINALLY A Lil lateral root poking it's way through.

Lol I know it's not much and plant seems to be suffering from heat stress or too much light so I've moved it out from under the halide and letting it soak up side lighting at the moment

Here's the Skywalker in the drip bucket same age as the dwc. Hoping dwc will catch up once roots hit res

Blue widow in the other drip bucket looking good

Auto grapefruit about a week behind the others in coco no nutes have been given yet

And here's the auto diesel 3 days behind the grapefruit

So far things seem to be going ok the two dwc plants are Def lagging a Lil behind but at first I had the water level about an inch above the bottom of the net pot and was top feeding up to 3 x a day. After taking some advice I've lowered my res to just hit the bottom of my net cup and I've cut back top feeding to once a day. Hopefully I got some fishbones by the end of the week

Any input or suggestions are welcomed Def a Noob here so if you think I'm doing something wrong please chime in.

Ok so far so good haven't killed em yet lol. My buddy gave me a sample pack of some armor si silica supplement. I changed the res yesterday and added 1/4 tsp gallon now I'm having crazy ph swings? After work last night 2 of the buckets were at 6.5 6.6 and one was over 7. I knocked em all back down to 5.8 and this morning right back up there 6.5? Also I've gotta add a lot more ph down to balance it out. Is ph down in high doses gonna be a prob? Think I might discontinue the silica next res change.

I see roots dropping on the farmsthey should b taking off shortly

My dwc has about 10 lateral roots poking out nothing hitting the res yet though

You guys think this one is a runt? It just looks kinda bizzarre it has rusty spots n slightly yellow so I gave it 50ppms w last res change. I can see a root at the bottom of pot but hasn't dropped yet. Any thoughts? I know it looks burnt but I just started nutes maybe the yellowing bcuz it was hungry?

Ok so I topped the sky walker a cpl days ago looks like I'm a get 4 tops. I'll start lst after to give the others a chance to catch up.

Roots are finally starting to drop in res on the Skywalker dwc.

Here's the blue widow in the farm. New growth looks great but the bottom leaves are turning yellow at the tips and dying? Any ideas? Ph is 6.0 and ppms are around 200

My runt Ww lol. Finally a root coming out of net pot. Looks like it may finally be growing.

My two autos in coco seem to be coming along did a very light feeding today along w some cal mag. First pic is diesel second is grapefruit freebie from dinafem