Plants experiencing a lot of discoloration Help Pls!

How’s it going Peeps. I got a situation running some autos and I’m experiencing a lot of discoloration. they are on week 6 since they sprouted.
soil: Fox Farm Ocean Forest
Autos all currently flowering
Temps: 73 day 62 night
Humidity: 50%

The leaves quickly turned yellow on me FAST. I checked their runoff ph and they were all solid 6.3-6.5. I’ve only watered them and fed them compost tea twice. Not sure what’s going wrong. Are they showing me they need nutes?
I’ll post pictures below you need more info feel free to lmk. You can leave any recommendation, comments or suggestions Ill highly appreciate it Cheers!

Temps are a bit low at night, try switching lights off to the warmest time like afternoon (if you haven’t already) or running lights longer just for heat, autos can handle 24/0 They look hungry also but that could be lockout, you could flush with a weak nutrient solution to see if it helps.

anexgrower said:

Temps are a bit low at night, try switching lights off to the warmest time like afternoon (if you haven’t already) or running lights longer just for heat, autos can handle 24/0 They look hungry also but that could be lockout, you could flush with a weak nutrient solution to see if it helps.

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thank you! I’ll def bump up the heater in there for higher temps. Also as for the flushing should I do it for a week with pure water then feed it after? Never had this happen before

Flushing with weak nutrient and water mix will actually pull salt buildup out better than pure water, and give the plants a little food