Can’t figure this out

Started using a new system threw the bucket company Havnt been able to dial it in and now I’m having a deficiency that’s killing my fan leaves if anyone knows what’s happening please help the pics don’t even do justice how bad it’s gettint

looks like potassium deficiency.

What bucket system? What nutrients, how much nutrients, ph, temp, lights, distance from lights. How old are they/are they in flower. Where they fine up to a point?

So what/how much nutrients are being used.is there a timer for watering or are manifolds on at all times,

I’m using front row ag and power si and every 10 days recharge ph between 6.3 to 6.7 water temp 74 ppm between 1000 and 1200 room temp 77 to 80 using growers choice roi 680 leds I just raised lights to about 2 feet about they were about 8 inches to a foot away a few days ago I’m using 3 gallon THEBUCKETCOMPANY watering buckets ...with happy frog soil unfortunately usually need to water twice a day

The only problem I had up till now was over watering and under watering trying to figure out buckets... and my drainage reservoir was over filled for a day and plants may have sat in run off for a day